Material: This watch is made of high quality ABS and glass. The ABS shell has high hardness, sturdiness and durability, waterproof and shockproof, resistant to scratches and wear. The watch uses an electronic clock core, which is durable and has a long battery life Driving experience: This is a mini quartz watch specially designed for cars, small in size and about 4cm in diameter. It can remind you the exact time without looking at your phone or watch, making it easier for you to drive Power socket: There are 2 styles of power sockets to choose from, including a USB socket and a CigaretteLighter socket Luminous clock: This car's quartz clock is designed with a luminous effect on the scale, allowing you to clearly see the time on the dial when you are driving long distances in the dark. Packing list: 1 x Electronic Clock Feature: Luminous clock: This car's quartz clock is designed with a luminous effect on the scale, allowing you to clearly see the time on the dial when you are driving long distances in the dark Driving experience: This is a mini quartz watch specially designed for cars, small in size and about 4cm in diameter. It can remind you the exact time without looking at your phone or watch, making it easier for you to drive Material: This watch is made of high quality ABS and glass. The ABS shell has high hardness, sturdiness and durability, waterproof and shockproof, resistant to scratches and wear. The watch uses an electronic watch core, which is durable and has a long battery life Power socket: There are 2 styles of power sockets to choose from, including USB socket and CigaretteLighter socket Easy to install: there is glue on the bottom of the quartz clock, which can be placed anywhere in the car. Small and compact, does not block line of sight when riding describe: Material: ABS Size: as shown Color: black Style: CigaretteLighter charge / USB charge Weight: about 100g. Packing list: 1 x Electronic clock