Children Kids Boy Girl Electronic Sport Watch Waterproof Digital Wrist Watches Features: [Designs] Senior material watch band bring comfortable wear experience and big numbers display make you read the time easily, with the assistance of backlight, reading time will be no problem even at the night. [Materials] Imported movement provides precise time keeping. The window is made of acrylic mirror and reinforced with stainless steel bottom, more durable. Reliable sealing improve the water resistant performance, meet most of waterproof need in the daily life. [Style] Equipped with beautiful case colors and Seven colors backlight for you to choose, wear this watch to show your style. Dial diameter: 388mm Strap width: 21.5mm Case thickness: 11.5mm Net weight: 31.2g Case material: ABS Strap material: TPU Waterproof: 50m swimming waterproof Total length of watch: 230mm Major perimeter: 215mm Minor perimeter: 135mm Package Included: 1 PC Of Digital Watch Note Please allow 2-3 mm difference due to manual measurement. Besides different computers display colors differently, the color of the actual item may vary slightly from the below images, thanks for your understanding(1 inch = 2.54 cm)