Featuring a cool design, this watch is stylish and beautiful and it comes with an LED red light display to provide you with a clear visual experience. What this watch can offer you is that it has a binary time mode, support for 30 meters of waterproof, and adjustable length to meet daily needs. It is constructed of alloy material. There are 2 different sizes for you to choose from. It is suitable for students daily wear. Item Name: Digital Watch Material: Alloy Features: Binary, LED Screen, 30 Meters Waterproof Power Supply: 2 x Button Battery(Included) Movement Type: Electronic Size Details: 1, L: 5cm/1.97", W: 3cm/1.18", H: 1.2cm/0.47"(Approx.) Strap Length: 23cm/9.06" (Approx.) 2, L: 4.5cm/1.77", W: 2cm/0.79", H: 1cm/0.39"(Approx.) Strap Length: 20cm/7.87" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Digital Watch