Features:
Receiver(dongle): Nano style
Connect Port: With USB2.0 above
Processor(MCU): BK24xx Serials
Transmit Power: Less than +4db
Power Supply: Rechargeable 450mAh lithium-ion battery
Charging Voltage: 4.4V ~ 5.25V
Charging Current: 300mA
Sleeping Current class1: 0.8mA
Operation Voltage: 3.7V
Operating Current: < 14mA
Color: Black / White
Battery Type: Chargeable Built-in lithium-ion battery(Not Include)
Product Weight: 32g
Product Size(L x W x H): 146.8 x 97.5 x 19mm
Package Weight: 190g
Approved: CE / FCC

Package including:
1 * Wireless keyboard
1 x User Manual