Lyla Mechanical Clock Stopwatch Physics Experiment Timer 60s 0.1s

Description:100% Brand new and high quanlityOne start/stop botton, one reset bottonGreat teaching aid and experiment instrumentSize(L x W x H): 8.5 x 4 x 10 cm/ 3.35 x 1.57 x 3.94 inchMaterial: IronPackage Includes:1 x StopwatchNote:Due to the manual measurement, please allow 1-2mm differences in size.Due to the light and screen difference, the item's color may be slightly different from the pictures. Please understand.