Model Number: AKB-BSH701 Key Specifications/Special Features: Wireless earphones, new style, OEM ODM orders welcomedCSR 8645/86351.Compatible with all audio equipment with Bluetooth functions, such as, PC, iPad, iPod, cellphone, tablet PC, MP3...; 2.CSR solution, HSP, HFP, A2DP, AVRCP3.Bluetooth protocol standards: Bluetooth V4.0 supported4.Receiver distance: 10m/360°5.Battery: Chargeable 3.7V/100mAh Lithium-ion battery6.Charging time: Less than 2hours 7.Successive working time: About 5 hours8.Standby time: 180 hours