Specifications: Portable and lightweight, comfortable to grip. 2.4GHz wireless technology, anti-interference connection. Comes with a USB receiver, plug and play, easy to operate. Suitable for smart TV, for Android TV Box, for PC/HTPC, projectors, computers, etc.. Item Name: Wireless Keyboard Material: ABS Wireless Modulation Mode: GFSK Modulated Frequency: 2.4-2.4835GHz Working Temperature: -20 to 65 Degree Celsius Battery Type: 3.7V/300mAh Rechargeable Battery (Included) Overall Power Consumption: <15mA Standby Power Consumption: 25uA Number of Keys: 57 Keys Remote Control Distance: >10 Meters Charging Port: Micro USB Features: Wireless, Remote Control, Multifunctional Size: 15.8cm x 5.5cm x 1.65cm/6.22" x 2.17" x 0.65" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Wireless Keyboard 1 x USB Receiver 1 x Charging Cable