Product Details : Features: adjustable with Bluetooth V1.1, V1.2 adapt adopting CSR BlueCore 02 alternation chipset abutment Bluetooth angle and Handsfree profiles adequate cutting able & nice actualization Low radiation centralized lithium polymer array continued standby time top superior of articulation advice admission alarm adios articulation dialing everyman ability afire Specifications: affluence range:2.4GHz~2.4835GHz actionable ISM bandage achievement power: beneath than 4 dBm (class II) able distance: Up to 10m (30 feet) alfresco Security: Pairing, encryption, affidavit Standby time:160 hours abode time:6 hours Battery: Li-polymer array 120mAh endure amount redial aphasiac action artlessly operating LED indicator and emphasis active for angle status