Features: 1.Precise incisions and interfaces ensure perfect fit, suitable for mounting position and easy to install. 2.The product uses high quality materials, effectively avoid corrosion and wear out, and durable. 3.Professional chip set provides superior performance in the system. 4.Easy to operate, anti-aging, and extended service life. 5.With automatic adjustment of brightness, time and temperature alternate display, with alarm clock, power-off memory function. 6.With function, accurate temperature measurement, accurate travel time, alarm setting (can be turned on/off), physical light control (can be turned on/off). 7.Can be as home, school or company desktop art jewelry. Specifications: Working voltage: 5V (mobile phone charger, charger bao, usb port power supply) Type: MCU Microcontroller program: installed and used directly Packing List: 1 x Display screen 1 x Power cable 1 x Accessory bag 1 x PC board 1 x Battery 1 x Shell 1、Precise incisions and interfaces ensure perfect fit, suitable for mounting position and easy to install. 2、The product uses high quality materials, effectively avoid corrosion and wear out, and durable. 3、Professional chip set provides superior performance in the system. 4、Easy to operate, anti-aging, and extended service life. 5、With automatic adjustment of brightness, time and temperature alternate display, with alarm clock, power-off memory function.