Poly 620-M, Universal, Black, Wireless, Bluetooth, A2DP, 7 h
Poly 620-M. Device type: Universal, Product color: Black. Connectivity technology: Wireless, Interface: Bluetooth, Bluetooth profiles: A2DP. Talk time: 7 h, Standby time: 120 h. Width: 0.433" (11 mm), Depth: 0.126" (3.2 mm), Height: 0.433" (11 mm)