SKMEI 1858 Square Waterproof Digital Dual Display LED Luminous Watch Features: 1. 50 meters waterproof, support swimming wear, let you do whatever you want 2. Square texture shell, electronic display, simple appearance 3. Electronic movement movement, durable and long life 4. Three-dimensional curved glass mirror 5. Stainless steel back cover, waterproof, dustproof and rustproof 6. Metal texture, multi-function movement, both leisure and sports 7. LED luminous, easy to read the time even in low light conditions 8. ABS hard case, strong and durable 9. Stainless steel strap, comfortable to wear 10. Stainless steel buckle, chic and beautiful 11. PU strap, comfortable and elastic Parameter: 1. Function: dual time, chronograph stopwatch, display of day of the week, timing alarm clock, luminous, 1224 hour format 2. Water resistance: 50m 3. Movement: electronic movement 4. Case material: ABS 5. Bottom cover material: stainless steel 6. Strap material: PU 7. Mirror material: resin 8. Display type: digital 9. Power supply mode: built-in button battery 10. Dial width: 50mm 11. Dial diameter: 37mm 12. Dial thickness: 12mm 13. Band width: 20mm 14. Total length of watch: 250mm 15. Weight: 42g