Project Description

BT20 Wireless Bluetooth Beadphones With/Without Wire

  • Foldable Headband headsets with Eco Leather harged.Aux Flat Tangle no cord

  • Cloud Foam Cushion with Eco Leather Earpads.

  • Includes Universal USB to micro USB cord

  • Deep base response,high quality stereo sound

  • Universal Mic with Track Control

Stock50 piece
OEM500 piece/colour
Brand Name: Langston/OEM
Model Number: BT20
Style: Headband
Communication: Wireless
Connectors: 3.5mm
Use: Mobile Phone

IC: CSR 8635

Bluetooth version:4.0,

Support Association:

HFPV1.6, HSPV1.2, AVRCPV1.4,div1.3

Frequency range: 2.4GHz-2.48GHz

Frequency response: 20Hz-20KHz

Working range: 10m

Charging time: 3 hours

Woring enviroment: -10 to 50C

Talking time: 20 hours

Music time: 20 hours

Standby time: 200 hours

Battery: 600 mAh

Battery Voltage: DC3.7V

Charging Voltage: DC5V

Impedance: 16Ω

Sensitivity: 100.2±3dB

Max.Input Power: 150 mW

Frequency Response: 2

Langston Group, which owns HongKong Langston Group Limited, Langston (Dongguan) Ltd, Langston (Guangzhou) Electronic Technology Co., Ltd., Dongguan Langston Electronics Co., Ltd.,Dongguan Peisheng Investment Co., Ltd.and other subsidiaries.  Langston Group now has Langsdom and iMi two brands for mobile earphone, has more than 1000 brand agents over the world,and tens of flagship stores in main cities in China, the overall strength of the enterprise ranked among the highest in the industry.

 What’s the standard MOQ?
Wholesale: 200pcs; OEM: 1,000pcs.

Can I get Free sample?
We offer stock sample for free; Cost range at $30 – $200 for out-of-stock sample or to be with custom logo. Freight cost collected.

What should I provide for OEM projects?

We need artwork at AI, EPS, PDF etc to create e-proof base on your artwork within 1-2 days.

What’s the QC process?
We have at least 3 inspections for each order – logo printing, mid-inspection, final inspection.

What’s the trade term?
EXW, FOB China port, CIF, DDU, DDP.

Can I get some back up piece?
We offer a few piece back-ups for OEM order with freight cost collected; No free back-up is available for wholesale orders.

Why choose us:

  1. We promise to reply with details within 24 hours
  2. Reasonable pricing for each of wholesale, OEM, ODM project
  3. Three inspections for each order; AQL standard
  4. Perfect match production schedule for each order
  5. Considerate before sale & after sale service.


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TAGS: Headphone wireless, Headphone bluetooth,