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Best Headphone 2018

  • CSR V4.0
  • Trans-Distance: 10m/30feet;
  • Frequency: 2402MHz-2480MHz;    
  • S/N ratio: - 82db;
  • Battery: Chargeable lithium-ion polymer Battery(3.7V / 250MA/h);
  • Charger Power: DC 5V (1A);
  • Successive Working Time: 8 hours;
  • Standby Time: about 180 hours.
  • Speaker diameter:Φ40mm;
  • Impedance: 32Ω;
  • S.P.L: 108dB  1KHz;
  • Rated power: 20mW;
  • Freq Response: 20Hz-20KHz;
  • Microphone Unit: φ4*1.5mm;
  • Impedance: ≤2.2KOhms;
  • Freq Response: 30Hz-16KHz;
  • Operating voltage: 3.0V.

Product description

1.Classic design on ear bluetoot headphone OEM available

2.Foldable design, 360 degree rotation available, eas to carry.

3.DIY appearance, suitable for different users.


4.Adjustable headband & soft earpad, comfortable wearing

BT-811 (3)

5.Easily charged by the USB cable (included), for your convenience

BT-811 (35)

6.Contents: 1* headphone; 1*USB charging cable; 1*audio cable; 1*manual; 1* fabric bag.

Packing & Delivery



Produce Capacity


Sample lead time

Three working days after receipt of payment

Payment Item

T/T/Western Union/ Paypal/ Alipay etc.

OEM bulk order

Welcome to contact sales team for details

Packaging Details

Standard gift box




About us

Company Profile

With over 20+ years’ experience in headphone industry, Yes-Hope focus on quality & service. 

Yes-Hope main products include true wireless stereo earbuds, bluetooth headphone, sports bluetooth earbuds, wired in ear & on ear headphones, call center headphones etc.


Quality is always Yes-Hope’s top priority.  Strict QC applies not only for the finished products, but also raw material/ electronic parts/ accessories/ package and so on.


To provide the best quality-price combination is always the goal of Yes-Hope.  Contact us today!


Our Certifications






Contact us


Tel: +86 755 8295 7397

Shenzhen Yes-Hope Co., Ltd.

Tel:86 755 82957397(13686806051)

Contact Person:Amos

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