Bluetooth V2.1+EDR Sun Visor Mount Caller ID Handsfree Car Kit (16-Hour Talk/1000-Hour Standby)
Bluetooth version: V2.1+EDR - Frequency range: ISM 2.4~2.48GHZ - Operation distance: within 10 meters - Talk time: 15~16 hours - Standby time: over 1000 hours / 41 days - Charging time: 2~3 hours - Supports HSP HFP1.5 profiles - Package included: - 1 * Bluetooth car kit - 1 * English manual - 1 * Metal clip - 1 * USB cable - 1 * Car charger - 1 * 3.7V/650mAh lithium battery