SKMEI 1879 Square Large Screen Men's Steel Belt Multifunctional EL Luminous Watch, Color: Black Black Machine Features: 1. 50-meter waterproof, suitable for swimming, allowing you to do as you please. 2. Square structural casing, electronic display, simple appearance. 3. Electronic movement, durable and long-lasting. 4. 3D three-dimensional curved glass mirror. 5. Stainless steel back cover, waterproof, dustproof, and rustproof. 6. Metal structure, multifunctional movement, suitable for both leisure and sports. 7. EL luminous display, easy to read time even in low light. 8. ABS hard case, strong and durable. 9. Stainless steel strap, comfortable to wear. 10. Stainless steel buckle, chic and beautiful. Parameters: 1. Functions: dual time, chronograph stopwatch, day of the week display, timing alarm clock, luminous, 12/24 hour format. 2. Water Resistance: 50m. 3. Movement: Electronic movement. 4. Case Material: ABS. 5. Back Cover Material: Stainless steel. 6. Strap Material: Stainless steel. 7. Mirror Material: Mineral reinforced glass mirror. 8. Display Type: Digital. 9. Power Supply: Built-in button battery. 10. Dial Width: 44mm. 11. Dial Diameter: 36mm. 12. Dial Thickness: 12mm. 13. Band Width: 20mm. 14. Watch Total Length: 230mm. 15. Weight: 96g.