Model Number: AKB-BSH703B Brand Name: JVC Key Specifications/Special Features: Wireless earphones stereo Bluetooth earphoneCSR 8645 V4.11. Compatible with all audio equipments with Bluetooth functions such as PC, iPad, iPod, cell phone, tablet PC, MP3 player2. CSR solution, HSP, HFP, A2DP, AVRCP 3. Bluetooth protocol standards: Bluetooth V4.1 supported4. Receiver distance: 10m/360° 5.Battery: Chargeable 3.7V/70mAh Lithium-ion battery6. Charging time: less than 2 hours7. Successive working time: about 5 hours8. Standby time: 180 hours