Features: 5.0 Technology: Adopted 5.0 high-level protocol scheme, this Earpiece ensures stable connection, functional depth enhancement. Pair: Provides fast and stable pairing with any IOS and Android smart phones, tablets, laptops, MP3 players from up to 49 feet (15m) . 180Rotating: 180Rotating headphone, both left and right ears can be worn. Only 13g of lightweight, easy to wear all without feel weight. This earpiece would not cause any burden to your ears, thus providing lasting wearing comfort. Big Power: Elaborate structural design with more battery power. With up to 60 hours of continuous calls, 30 hours of music playing time and up to 180 in standby mode(Use with charging box). It can pair easily with any two devices at once. True Painless: Artificial body engineering design makes it comfortable to wear, silicone earplugs, curves, attached to the ear gallery. Make your ears even and give you a better wearing experience. Specifications: Specification: Model: FC1 TypeHeadset Version5.0 Weight0.45 ounces13g voice broadcast: telephone number SupportACC, HFP, HSP, A2DP and AVRCP profiles Operating Rangeup to 49 feet (15 m) Signal to noise ratio: 96dB Resistance: 32 Crystal frequency: 40MHz Sensitivity: -94dBm Charging voltage: DC5V 1A Talk Time60 hours Music Play Time30 hours Standby Time180 Charging TimeAbout 1.5 hours Battery capacity: 170mAh Charging box capacity: 800mAh Package Included: 1 x Headset 1 x USB Cable 1 x Charging box (optional) 1 x User Manual