Arvia 2 in 1 Mic Speaker KTM-4


  •  Size Guide

    Size Guide

  •  Delivery & Return


    We ship to all 50 states, Washington DC.
    All orders are shipped with a UPS tracking number.
    Always free shipping for orders over US $200.
    During sale periods and promotions the delivery time may be longer than normal.


    Elessi will accept exchanges and returns of unworn and unwashed garments within 30 days of the date of purchase (14 days during the sales period), on presentation of the original till receipt at any store where the corresponding collection is available within the country of purchase.

    Your return will usually be processed within a week to a week and a half. We’ll send you a Return Notification email to notify you once the return has been completed.
    Please allow 1-3 business days for refunds to be received to the original form of payment once the return has been processed.


    Give us a shout if you have any other questions and/or concerns.
    Email: [email protected]
    Phone: +1 (23) 456 789

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Basic Parameters
  • Total power: 10W THD 1KHZ 10%
  • Input sensitivity: 500Mv1KHz THD1%
  • Signal to noise ratio: >70 Db
  • Speaker unit: 2.75 inch 4Ω 10W
  • Frequency characteristics: 90 Hz ---20KHz (1 khZ 0 Db, ±3 Db)
  • LED indication: Power supply, charging, code matching, Bluetooth, volume, (20 LED lights)
  • Input interface: Type-C
  • Output interface: USB charging 2.1A
  • Headphone output interface: 3.5ST
  • Built-in battery: 3.7V 4000mah
  • Power requirements: DC5V-1.5A
  • Standby time: About 300 hours
  • Working hours: 8-12 hours
  • Colour: Black, gray
  • Product size: 160*45mm
  • Product number: BT51WB
Call parameters
  • MIC: 6 omnidirectional microphones
  • DSP processing: Eliminate echo and environmental noise
  • Pickup angle: 360° all-round
  • Pickup distance: More than 5M (noise environment within 60 decibels)
System Parameters
  • USB support system: Windows, Linux, Android, iOS
  • USB wireless interface support system: Windows, Linux, Android, iOS
Weight 3.15 kg
Dimensions 20 × 10 × 30 cm
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