SX21 Noise Reduction Lavalier Wireless Microphone For Type-C

Record clean, professional-sounding audio straight from your Android phone. The sx21 wireless microphone is a compact wireless lavalier kit for Type-C phones that plugs in and starts recording — no drivers, no apps, no complicated setup. The round mini transmitters clip magnetically onto a collar or shirt, so you can shoot vlogs, interviews, and live streams hands-free.

The signature is simplicity with real engineering: built-in ENC environmental noise reduction cuts background noise across different frequencies while keeping your voice’s natural texture, the 360° omnidirectional condenser capsule picks up your voice from every direction, and a 2.4GHz wireless link with only ~30ms transmission delay keeps audio in sync with your video over a 20–30m barrier-free range. The transmitter runs up to 6 hours on a charge (110mAh), and the included 800mAh charging case with a digital battery display tops it up between shoots.

The rest of this page walks through the ENC noise reduction, the battery, the plug-and-play setup, the kit contents, the low-latency link, the internals, and the full specs in detail. Every figure below — 110mAh/800mAh, 6h, 30ms, 20–30 m, −42dB, 64dB, 20Hz–20kHz — is taken from the verified research notes for the sx21 wireless microphone, and nothing here is invented. One brand note: no brand is assigned to this product — it is sold simply as the sx21 wireless microphone, and this page never invents one.

ENC Noise Reduction

The card above states the clarity promise: “ENC NOISE REDUCTION,” with the subline “Cuts background noise, keeps your voice natural.” The sx21 wireless microphone’s built-in ENC environmental noise reduction filters noise across different frequencies — street rumble, room hum, crowd wash — while keeping your voice’s natural texture intact.

The honest split: ENC cleans the voice signal going into your recording; it is not active noise cancellation for a listener. For outdoor vlogs, street interviews, and busy-room recordings, the sx21 wireless microphone’s ENC is the difference between usable audio and a reshoot.

Up to 6 Hours of Recording

The card above states the battery promise: “UP TO 6 HOURS OF RECORDING,” with the subline “110mAh mic + 800mAh charging case with battery display.” The sx21 wireless microphone’s transmitter runs up to 6 hours on its 110mAh cell, and the included charging case’s 800mAh battery tops it up between shoots — the digital display shows the case’s charge at a glance.

The figure carries its “up to” everywhere it appears on this page, exactly as the verified notes state it. Six hours per charge plus the case means this kit covers the vlog day, the class schedule, and the interview run without a charger hunt.

Plug In. Clip On. Record.

The card above is the setup story: “PLUG IN. CLIP ON. RECORD.,” with the subline “Type-C plug & play — no apps, no drivers.” The sx21 wireless microphone’s Type-C receiver connects to your phone and pairs automatically — magnetically clip the round puck to your collar and you are recording.

No driver installation, no app permissions, no account. This kit is built for the creator upgrading from a phone’s built-in mic: the first recording should take seconds, and it does.

What’s in the Kit

The infographic above itemizes the sx21 wireless microphone’s kit with leader-line callouts: the charging case, the two transmitters, and the Type-C receiver. Three callouts, three verified parts — footnoted as an illustrative reconstruction.

Per the store reference photos, the box holds 2 round clip-on transmitters, 1 Type-C receiver, and the charging case with its digital battery display. One honest note, banked as a store-fix: the page never states the transmitter count in words — the gallery photo shows the pair, and this listing states exactly that.

30ms Low-Latency Link

The infographic above is the sync story: “30MS LOW-LATENCY LINK,” with the subline “Stable 2.4GHz wireless, 20–30m range.” The sx21 wireless microphone’s ~30ms transmission delay keeps audio locked to your video — no lip-sync drift — over a 20–30m barrier-free range.

Latency is the invisible spec that ruins cheap wireless: too slow and every video needs manual sync. The 30ms figure here is the verified number, and the infographic shows the mic-to-phone signal path exactly as it works.

Inside the SX21

The x-ray above is an illustrative reconstruction — not a teardown photo — of the sx21 wireless microphone’s round TX puck: a transparent cutaway revealing the glowing omnidirectional condenser capsule, the 110mAh cell, and the ENC processor. Headline “Inside the SX21,” subhead “Pro voice capture in a pocket-size puck,” footnoted “*per manufacturer · Illustrative reconstruction.”

The engineering story is compact: the capsule behind the 360° pickup, the 110mAh cell behind the 6-hour figure, the processor behind the ENC. The matte-black pucks carry a mesh grille, a tiny green LED, and magnetic clips — the copy says the same as the image: a visualization of the architecture, not disassembled hardware.

Clear Voice, Zero Hassle

The promo above is the sx21 wireless microphone in one glance: the full kit on a premium dark backdrop with a spotlight — “CLEAR VOICE, ZERO HASSLE,” with the subline “Wireless lavalier kit for Type-C phones.” and the “ENC Noise Reduction” chip. No prices on the card, no fine print games.

Clear voice is the outcome, zero hassle is the method: plug in, clip on, record. The whole argument for Android creators, in one frame.

Made for Type-C

The final promo is the compatibility argument: “MADE FOR TYPE-C,” with the subline “Plug-and-play with Android phones.” and the “No App Needed” chip. The sx21 wireless microphone is the Type-C specialist — if your phone charges over Type-C, this kit is built for you.

The honest boundary: this is a Type-C kit, not a universal one. iPhone users need a different kit; Android users get the sx21 wireless microphone’s full plug-and-play story with zero adapters.

On the Collar, Up Close

The final shot is the hardware in use: the sx21 wireless microphone’s round transmitter puck magnetically clipped to a shirt collar — the mesh mic grille facing out, the green LED confirming it is live. Small, matte black, and camera-friendly.

Magnetic clip adsorption means no pin holes in the shirt and no fiddling with clips mid-shoot. The sx21 wireless microphone’s pucks are built to disappear into the frame while the voice stays front and center.

Specifications

All figures are taken from the verified research notes for the sx21 wireless microphone — the 2-TX/1-RX Type-C kit, 360° omni condenser pickup, ENC noise reduction, 30ms delay, 20–30 m range, up to 6h battery, 110mAh/800mAh cells, −42dB sensitivity, 64dB SNR, and 20Hz–20kHz response are the store page’s own figures. The page’s “64DBM” is a unit typo (dBm is a power unit; SNR reads dB) — corrected honestly here and banked as a store-fix. No brand is assigned to this product anywhere on this page. Nothing else in this table or on this page is invented.

Why Buy From Gadget Superb

Order the sx21 wireless microphone from Gadget Superb with cash on delivery anywhere in Bangladesh — pay in cash when the parcel arrives, with no advance payment, card details, or OTPs ever asked. Delivery takes 1–3 working days inside Dhaka (৳70) and 2–5 working days outside Dhaka (৳120). Every order carries 7-day easy returns: keep the kit in original condition with the box and accessories, and start a return with your order number via hotline 09638054751, care@gadgetsuperb.com, or Messenger.

Explore the full Audio Electronics collection or compare Microphones to find the right fit.

Frequently Asked Questions

Will the sx21 wireless microphone fit my phone?

If your phone uses Type-C, yes — the sx21 wireless microphone is built for Type-C phones: the receiver plugs in and pairs automatically, no drivers or apps. It is the Type-C specialist, so iPhone (Lightning) users should choose a different kit; Android users get the full plug-and-play story with zero adapters.

How does the ENC noise reduction work?

The sx21 wireless microphone’s built-in ENC environmental noise reduction filters background noise across different frequencies — street rumble, room hum, crowd wash — while keeping your voice’s natural texture. Note the honest split: ENC cleans the recorded voice signal; it is not active noise cancellation for a listener.

How far can I be from my phone?

A 20–30m barrier-free range on the stable 2.4GHz link, per the verified notes — room to roam while filming. And with only ~30ms transmission delay, the sx21 wireless microphone keeps audio locked to your video with no lip-sync drift.

How long does the battery last?

Up to 6 hours per charge from the transmitter’s 110mAh cell, with the 800mAh charging case topping it up between shoots — the case’s digital battery display shows its charge at a glance. The figure carries its “up to” everywhere it appears on this page.

What comes in the box?

Per the store reference photos: 2 round clip-on transmitters, 1 Type-C receiver, and the charging case with digital battery display. The page never states the transmitter count in words — the gallery photo shows the pair, and this listing states exactly that. Nothing added, nothing missing.

What are the audio specs?

Sensitivity −42dB, SNR 64dB, frequency response 20Hz–20kHz — the store page’s own figures, stated exactly as verified. One honest correction: the page writes SNR as “64DBM,” but dBm is a power unit — for a signal-to-noise ratio this reads 64dB, and this listing uses the correct unit.

Is the sx21 different from other lavalier kits on this store?

In text only, since this page never links sibling products: the sx21 wireless microphone’s identity is the Type-C-only kit with round magnetic pucks, ENC noise reduction, ~30ms low latency, and 6-hour battery (110mAh mic + 800mAh case). Compare the verified figures in each product’s spec table — connector coverage, latency, and battery figures are the honest differentiators.

How do I attach the microphone?

The round transmitters clip magnetically onto a collar or shirt — magnetic clip adsorption, no pin holes, no fiddling. Just clip the sx21 wireless microphone’s puck on and talk; the 360° omni capsule picks up your voice from every direction without aiming.

Which brand makes the sx21 wireless microphone?

No brand is assigned to this product — it is sold simply as the sx21 wireless microphone, and this page never invents a brand for it. That is also why this listing carries no external brand link: there is no official brand site to point to.

Who is the sx21 wireless microphone for?

Android-phone creators — TikTokers, vloggers, online teachers, interviewers — upgrading from their phone’s built-in mic. If you want clear voice in noisy environments with dead-simple plug-and-play and zero app hassle, the sx21 wireless microphone is built for you.

What warranty does the sx21 wireless microphone come with?

a 7-day store warranty

What is the price of the sx21 wireless microphone in Bangladesh?

The current price is shown on the product page and can change during sales, so no figure is quoted here. Check the live sx21 wireless microphone page on Gadget Superb for today’s price — that is what you pay in cash on delivery, plus the standard delivery fee.