A4Tech FBX51C Bluetooth & 2.4G Wireless KB Earphone System Requirement: Windows XP /

System Requirement: Windows XP / Vista / 7 / 8 / 8

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A4Tech FBX51C Bluetooth & 2.4G Wireless KB Earphone System Requirement: Windows XP /A4Tech FBX51C Bluetooth & 2. 4G Wireless KB [BT+2. 4GHz] Features Bluetooth and 2. 4GHz connection. Auto Channel Sort, Each keystroke will be rewarded with a smooth tactile response from Scissor Key Switch Keycaps. Calibrated precision, 1. 5mm actuation point, less key chatter, Charge with the Type C USB connector in the package. It requires approximately 2. 5 hours to be fully charged.