1. Large LED screen display, two‑row channel memory, waterproof design, which is useful and practical. 2. Dynamic shape, comfortable grip, ergonomic design, decent appearance size, accurate timing. 3. Waterproof and drop‑proof design, can be used in rainy days, three buttons, quick . 4. Can be used as stopwatch, timer, metronome, clock and alarm clock, 10‑segment storage display. 5. Very suitable for sports teachers and athletes at professional competition, fitness, sports and other scenes. Specification: Item Type: Sports Timer Material: ABS Battery: 2032 Button Battery Battery Capacity: 260 mAh(Built-in Battery) Display: LED Screen Screen Size: 1.9 In Waterproof Grade: Life Waterproof Functions: Stopwatch, 10-segment Storage Display, Timer, Metronome, Clock and Alarm How to Use: S 1 represents start, stop, and adjustment; S 2 represents redisplay and selection; S 3 represents segmentation, reset, and setting; S4 function conversion PackageList: 1 xSports Timer Note: 1.Avoid immersion, dampness, and violent vibration and impact.2.Built‑in Battery