【With Backlight】Features key backlight, enabling easy typing in low-light conditions 【Stand Function】The tablet case can be converted to a supporting stand for hands-free movie watching and web surfing 【Premium Material】The case is made from high-quality PU leather material, offering a delicate touch and premium feel 【Lightweight and Portable】Designed to be lightweight and portable, making it easy to carry and use anywhere 【Touchpad Design】The built-in touchpad allows you to navigate and control the cursor like a laptop, you don't need to touch the screen or buy an additional mouse. Easily edit documents, browse the web and build presentations with unparalleled speed Specifications: Operating distance: 10 meters Modulation system: GFSK Operating voltage: 3.3~4.2V Charging current: <225mAh Standby time: 90 days Continuous working time: 5 hours (backlight on)/380 hours (backlight off) Lithium battery capacity: 500mAh Charging time: <3 hours Lithium battery life: 3 years Keyboard service life: >5 million times Operating temperature: -20~50℃ Charging temperature: 0~45℃ Compatible with: Samsung Galaxy Tab S9 FE X510/X516 Samsung Galaxy Tab S9 X710/X716B/X718U Samsung Galaxy Tab S8 X700/X706 Samsung Galaxy Tab S7 T870/T870 Note: Please store and use the product at room temperature. Do not disassemble, repair or modify the product by yourself. Do not expose this product to rain or humid environment. Do not wipe this product with chemical solvents. Do not throw it to avoid damage to the product due to falling. If not used for a long time, please charge the product once every 2 months. Do not discard it at will, or place it in high temperature or fire to avoid danger.