This mechanical stop clock features a robust metal construction design, making it a reliable sports accessory for coaches, referees, and teachers. As a lightweight timer and precision physical experiment timer, it is ideal for physics teaching, workout timing, and scientific experiments where accurate measurement is essential. Features -Color:Multi -Material:Metal -Size:6.50X5.00X1.60cm/2.55X1.97X0.63in -Note: 60 seconds/lap, -Precision timing for experiments: this mechanical stopwatch is designed for physics experiments and physical experiment timers, ensuring high accuracy with minimal error, essential for precise scientific measurements -great metal construction: crafted from robust metal, our mechanical stop clock offers performance as accessory and mechanical stopwatch, great for repeated use in teaching environments -Easy to use analog interface: the analog stopwatch features a simple design, making it an ideal teaching aid mechanical stopwatch for both beginners and educators in various lab scenarios -Versatile application range: suitable as a work timer, running timer for outdoor activities, and physical experiment stop watch, this model supports numerous education and training needs -Short-interval accuracy: with a 60-second countdown timer and sports timer functionality, it’s tailored for short, high precision tasks in running timers or classroom experiments Package list: 1 x mechanical stopwatch