Foldable Bluetooth-compatible Keyboard with Touchpad Wireless Folding Keyboard Specification: Product Model:FK328T Type: Bluetooth-Compatible keyboard Material: ABS Plastic Support System: iOS,Android,Windows Number of Keys: 64 Keys Wireless/Bluetooth-Compatible programme：Nordic(N51802) Bluetooth-Compatible version: Bluetooth-Compatible 5.0 imported chip Keyboard life (number of keystrokes) 5 million times Response speed: 30 ms Wireless/Bluetooth-Compatible transmission distance: 10 metres Operating voltage/current: 3.7V/1mA (when pressing keys), 3.7V/7mA (when touching maximum) Built-in lithium battery: Yes Battery type & capacity: polymer soft pack lithium battery 301850-180mAh Charging time: 2 hours Usage time: 80 hours Standby time: >2 months Colour: Iron Grey Product expansion size: 35.8*10*0.9cm Product folding size: 17.8*10*1.8cm Package Included: 1*Folding keyboard 1*Charging cable 1*Instruction manual (Other not included) Note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.