STRYVE S8027 Sports Multifunctional Luminous Dual Display Chronograph Student Watch 1. Functions: dual time, week display, calendar display, stopwatch function, alarm clock function, luminous display, 50 meters waterproof, 1224 hour format 2. Display type: pointer + number 3. Movement: Japanese imported quartz movement + electronic movement 4. Case material: ABS+TPU 5. Mirror material: acrylic 6. Strap material: TPU 7. Buckle style: pin buckle 8. Buckle material: stainless steel 9. Power supply mode: built-in button battery 10. Band width: 22mm 11. Dial thickness: 19mm 12. Dial diameter: 55mm 13. Total length of watch: 265mm 14. Weight: 71.6g Features: 1. Elastic shell, shockproof and drop resistant 2. 304 stainless steel bottom cover, daily waterproof, not easy to rust 3. Support daily waterproofing, such as washing hands, raining, bathing, etc. 50 meters waterproof 4. EL luminous, no fear of the dark night, easy to read the time in low light conditions 5. The TPU+ABS case is shockproof and drop-resistant, no fear of falling 6. Three-dimensional surface hierarchy, trendy elements, cool dual-display design 7. TPU non-slip strap, the strap uses non-slip texture, soft and moderate, comfortable and breathable 8. Stainless steel buckle, easy to use, chic and beautiful