Feature: Rechargeable: Using lithium-ion battery, it can work for 48 hours on a single charge (standby 560 hours). Description: Name: 3-system universal 3-fold foldable Bluetooth-enabled keyboard with touchscreen Color: black, silver (optional) Product gross quantity: 0.26KG Product net weight: 0.21KG Expanded size: 30.4x9.7x0.6cm Folding size: 15.2x9.7x1.2mm Touchpad size: 5.5x4.5mm Applicable system: compatible for Android / IOS / Microsoft Connection: Bluetooth-compatible 3.0 Capacity of battery: 140mah Battery life: 3 years Battery: built-in rechargeable lithium battery Charging time: less than 2 hours Continuous use time: 100 hours Packing List: Folding Keyboard x 1 Charging Cable x 1 Instructions x 1 Note:1. Due to manual measurement, please allow 1-3cm error. Make sure you don't mind before you bid. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the product. Thank you.