<b>Features:</b><br> Material: ABS+plastic<br> Working distance：10m<br> Input:Micro USB charge 5V<br> Li-ion battery capacity:200mah<br> Operating voltage:3.7v<br> Keyboard standby time:Approx 100 days<br> Working Time:70hours<br> Charging time:4 hours<br> <b>Package Includes</b><br> 1 x Keyboard Case Cover