Description as follows: strap lock in the form of a buckle ring diameter 3.5 cm x 3.5 cm rubber watch strap material watch strap can be adjusted to the size of the wrist strap width 2 cm upper strap length 7 cm lower strap length 12 cm LED touchscreen watch display consists of time, date and seconds if it is only exposed to rain water, God willing, the watch is safe but cannot be used for diving the watch strap is easy to remove and install so if you want to change the strap you can do it yourself the watch battery used is a regular battery that can be found in watch stores