SYNOKE 99269 Children Sports Waterproof Digital Watch, Colour: Large (Red)1. Mirror material: plexiglass mirror2. Buckle material: stainless steel3. Strap material: PU4. Case material: plastic5. Clasp style: pin buckle6. Crown type: button7. Table bottom type: ordinary8. Dial shape: round9. Movement type: electronic10. Display type: number11. Waterproof performance: Not waterproof12. Special functions: week display, month display, luminous, stopwatch timing, alarm clock, hourly hour, 1224 hour system13. The total length of the watch: 245 mm for large size and 230 mm for small size14. Dial thickness: large 16. 99 mm, small 16. 02 mm15. Strap width: large 18 mm, small 16 mm16. Strap thickness: large 1. 8 mm, small 1. 2 mm17. Dial width: large 43. 49 mm, small 38. 62 mm18. Weight: 37. 1 grams for large size, 29. 7 grams for small size