1. Strap material: PU plastic 2. Case material: ABS 3. Bottom cover material: alloy 4. Mirror material: plexiglass mirror 5. Dial diameter: 50.49mm 6. Strap width: 24mm 7. Dial thickness: 15.09mm 8. Function: Luminous, Alarm, WR50M Waterproof, Hourly Timekeeping, Running Second, Day and Date Display, 12/24 Hours 9. Waterproof: WR50M 10. The strap is made of plastic material, which is comfortable to wear 11. High-quality pressure-resistant case design, shock-resistant and drop-resistant 12. Using plexiglass mirror surface, wear-resistant and scratch-resistant 13. Built-in battery: CR2025 button battery x 1 (delivery with battery) 14. Product net weight: 48 grams 15. Packing: OPP bag