• Bluetooth-compatible CSR V4.0 with fast pairing and 99% compatibility with smart phones

• MP3 music payer (Bluetooth-compatible wireless)

• Support hands-free phone call, answer / hang up / reject

• Powerful bass output, high definition sound quality with effective noise isolation

• Protein leather ear cups to contour around your ears for long-lasting comfort

• 650mAh rechargeable battery offers 10 hours music playback

• Portable and foldable design for easy storage

Specification:

• Model: B20

• Bluetooth-compatible version: 4.0

• Calling time: up to 9 hours

• Music play time: up to 10 hours

• Standby time: =300 hours

• Charging time: 1-2 hours

• SNR: 98dB

• Distortion: = 0.1%

• Working current: =20mA

• File format: MP3 / WAV

• Transmission distance: = 33ft

• Lithium battery capacity: 3.7V 650mAh

• Standby current: <500uA

Compatible with:

• iPhone Samsung Huawei Sony HTC LG etc. Bluetooth-enabled smartphones or tablets

• Other MP3/MP4, PC etc. with 3.5mm audio jack