Brand Methylene Model K609 Quantity 1 Color White Bluetooth Version V3.0 Ear Coupling Over the Ear Talk Time 6 Hour Standby Time 300 Hour Operating Range 1~10 meter Compatibility V2.0 / V1.1 / V1.0 Microphone Yes Supports Music Format MP3 Power Supply Built-in Battery Built-in Battery Capacity 70mAh Compatible With Iphone / Samsung / HTC / XiaoMi Other Features Double microphone supports double noise reduction supports connect to two devices at the same time; Audio transmission (A2DP) long talking and standby time; Standby time: 300 hours; Talking time: 48 hours music time: 6 hours; Music play and calling can switch automatically; Supports 2 devices at the same time Packing List 1 x Bluetooth earphone 1 x AC Power charger adapter (100~240V / US plug)1 x Earhook 1 x Earphone (45cm-cable)1 x USB cable1 x Chinese / English user manual