Usage Tips:1. Digital display meets daily timing needs. 2. Magnetic suction: easy to place and absorb. 3. Timing function: accurate timing, easy to , self-discipline and science throughout life. 4. Small and exquisite: portable and easy to store, small and space-saving. 5. Innovative LED light display: abandon traditional digital display, reduce the pressure brought by countdown, and make life easier. Long-lasting battery life: worry-free power consumption, removable battery, only 2 x AAA batteries are needed (need to be self-matched). Colour:Black Material:Plasticand electronic components Package Contents: 1 x Timer(without battery) 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.