brand new wireless in-car speakerphone T821. Specifications: Bluetooth Version: Bluetooth V4.1+EDR Bluetooth Profile: AVRCP 1.5, A2DP 1.2, Hands-Free Profile 1.6, Headset Profile v1.1 Frequency Range: ISM 2.4GHz ~ 2.48GHz Wireless Transmission Range: ≥15M (free space) Charging Input: 5V/500mA Rechargeable Li-Polymer Battery: 3.7V, 1000mAh Charging Time: About 2-3 hours Talking Time: Up to 20 hours Stand-by Time: 40 days
