Rapoo H3050. Device interface: Bluetooth. Ear coupling: supraaural, Acoustic system: semi-open. Dimensions (WxDxH): 152 x 50 x 165 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. Cables included: USB