Albrecht BPA 300. Bluetooth version: 2.0+EDR. Battery technology: Lithium Polymer (LiPo), Talk time: 7 h, Standby time: 140 h. Operating temperature range (T-T): 0 - 45 °C, Storage temperature range (T-T): -10 - 55 °C. Charging time: 120 min. Input voltage: 230 V, Output voltage: 5 V