1.Full metal shell, it has a beautiful appearance, comfortable grip, large screen large font display, luminous display for easy reading. 2.Accurate timing, accurate to 0.001 seconds 3.It can prevent rain, sweat and splashing water. Just wipe it dry after use. It is easy to use and meet daily waterproofing requirements (Note: can not be used in water). 4.Shutdown design, you can turn off the screen when it is not in use and it keep the memory. You can turn off the button sound. 5.Full-featured, stopwatch, clock calendar, countdown, football stopwatch, alarm clock function, metronome, can be used for sports competitions, competitions, coaches, referees, training, etc. Specification: Accuracy; thousandths of a second Size: 73 x 64 x 15mm Screen: 31 x 24mm Number of tracks: 200 tracks of memory Battery: CR2032 button battery Color: As Shown Material: Metal Package Contents: 1 x Sports Running Training Timer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.