Transmission range: 15m
Functions: TF card, power display, call function, voice control, music support
Bluetooth protocol: 5.0
Channel: stereo
How to use it; whether the head is wearing one or two ears
Bilateral stereo
Suitable for gift giving occasions: wedding, birthday, festival, relocation, trade fair, advertising promotion, employee welfare, anniversary celebration, business gift, opening ceremony, award ceremony, public relations planning
Color: Black Silver
Feature 3: TF card mode
Feature 2: deep noise reduction, wired wireless free switching

Feature 1: large power 1200mAh (endurance 60 hours)

Ergonomic Comfort-fit: Foldable and adjustable PU leather headband for noise reduction and comfort fit.
Built in Microphone and Controls: Enjoy a completely hands free listening experience with a built-in microphone for high definition calls; Control your music or answer/end phone calls right from your headset with built-in controls.
AUX Mode and TF Card: Detachable 1.5 meters cable makes the headphones as normal wired headphones when the internal rechargeable battery is exhausted and TF card let you enjoy your music directly without connecting your devices.
Excellent Compatibility: Compatible with All Android Phones, IOS, and Blackberry System Phones. End/answer Phone Calls, Pause/play Music, Support with Switch of Previous/next Songs.
What You Get: Gorsun E88 Bluetooth headphones, Micro USB charging cable, AUX cable, User manual, our friendly customer service.