Perfect ultra-run industrial design inspirationPatented touch custom technologyPatented key mapping technologyPatented front and rear screen signal fusion technologyHigh-speed Bluetooth technologyLarge capacity ultra-thin batteryHigh-precision seamless ultrasonic welding[Product Name] Magic Plus Smart Game Trackpad[Bluetooth version] 4.0[Size] 133 * 68 * 5.4mm[Supported operating system] ios / Android[Duration] 56 hours[Temperature range] 0 degrees Celsius + 50 degrees Celsius[Battery capacity] 450mAh[Charging time] 3 hours[Working current] 4.2V / 1A