For Lenovo Tab M10 HD Gen 2 Touchpad Bluetooth Keyboard Leather Tablet Case 1. Adopt high-quality chips with stable performance. 2. Built-in 220mA lithium battery, can last for 60 hours. ? 3. Specially equipped with Micro USB cable for charging, charging for about 3 hours. 4. Sleep function, if no operation is performed, the keyboard will automatically enter the power saving mode within 15 minutes 5. Universal for iOSAndroidwindows 6. 59 key design, with 14 IPAD shortcut function keys. 7. The keys are screen-printed with UV peritoneal treatment, which is durable and will not fade after 5 million times of friction and beating. The surface of the keyboard is brushed, which is very textured. 8. Scissor foot button design, sensitive typing, quick response and good hand feel. ? Product Specifications: 1. Modulation mode: GFSK 2. Working voltage: 1.8-3.6V 3. Charging time: 3 hours 4. Lithium battery capacity: 220 mA 5. Sustainable use time: 60 hours 6. Lithium battery life: 3 years 7. Standby time: 30 days 8. Size: 258mm*172mm*7.7mm 9. Net weight: 560g