Connection: Bluetooth Battery: Built-in rechargeable lithium battery Battery capacity: 250mah Charging time: less than 4 hours Battery life: 3 years Continuous use time: 60 hours Detachable design Support 15-degree tilt ergonomics The thinnest part of the ultra-thin design is only 0.36cm ABS Scissor Laptop Button Design TPU soft silicone pen slot version Mouse touchpad function, the touchpad compatible with systems above IOS13