Vivanco Stereo Bluetooth Headset. Bluetooth version: 2.1+EDR, Bluetooth profiles: A2DP, AVRCP, HFP, HSP. Acoustic system: semi-open. Battery technology: Lithium-Ion (Li-Ion), Talk time: 9 h, Standby time: 240 h. Compatible products: iPhone 3G iPod Touch PS 3. Compatibility: Multi