Teaching Aid Mechanical Stopwatch Mechanical Stopwatch Description Are you looking for a professional, durable, yet affordable stop watch? Are you in search of a sturdy, trustworthystop watch that can do multiple jobs and serve youfor a long term? If yes, look no further! Our premium mechanical stopwatch must meet your needs. Features -Color:Silver -Material:metal -Size:6.50X5.00X1.60cm 2.55X1.97X0.63inch - Great teaching aid and experiment instrument, very practical to use. - Feels good in your hand and easy to operate. - With Large display screen, can read the number clearly. - It is made of high-quality material, durable for your long time use. - Dust, water, shock, break and corrosion resistant. Package list: 1 X Mechanical Stopwatch