Features: -Innovative design. This product combined Bluetooth earphone and power bank together, those two products are both we can not live conveniently without in this information era. -Build in li-battery of 900mAh, you can charge your phone or smart devices at any time. -The earphone can play music for 45 hours, or call for 50 hours. And it can be charged at any time with the power bank. -Light in weight, the earphone only weight 4.5g, never a burden to your ears. -Multifunction key. Easy to operating. -The latest Bluetooth 4.1 with CSR chip and 80Hz CPU. -It supports connection with 2 devices at the same time. -The battery capacity will be displayed on your IOS devices in real time. -Warm voice prompt. You don’t need to take off the earphone to look the LED indicator every time, just follow the voice prompt to operate. -Aluminum material with polished surface. looks high-end, high quality and fashionable. -Stereo sound. HD call, strong bass with CVC6.0 de-noise design, providing you awesome audio experience. -Optimized circuit design with overcurrent protection, short circuit protection, protect the equipment from hurt. Specification: Product parameters: Noise reduction: CVC6.0 Battery indicator: Polymer lithium battery 900mAh Bluetooth version: 4.1 Support agreement: HFP, HSP, A2DP, AVRCP, APTX Call distance: ≤10M Talk time: 50H Play time: 45H Standby time： 100D Charge time： 1~2H Charging interface：Micro USB] Pair mode: K1 Color: black Package contents: Earphone*1 User manual*1 ear stabilizer*1 Additional ear plug*2