Rapoo H8060. Device connectivity: Wireless, Device interface: 3.5 mm, Wireless range: 10 m. Ear coupling: supraaural, Acoustic system: semi-open. Battery life (max): 8 h, Charging time: 2 h. Dimensions (WxDxH): 155 x 172 x 60.5 mm. Mac operating systems supported: Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard, Mac OS X 10.7 Lion