Digital Watch for Boys Girls Waterproof Kids DIY Watch Set with 3 Watch Cases and 2 Watchbands NFC Door Unlocking 50M Waterproof Features: Kids watch set includes a movement, 3 watch cases and 2 watchbands to design different watch styles. Watch functions: Displays day/date, stopwatch, countdown timer, alarm reminder. LED glow mode allows for easy reading in low light conditions. Built-in NFC function helps unlock NFC-enabled smart door quickly. 50M water-resistant, suitable for washing hands, washing face, rain splashes. High-quality ABS watch case provides impact resistance and long-lasting durability. Super soft TPU watchbands for maximum wearing comfort. Adjustable length for different wrist sizes. Built-in CR2025 battery with super long battery life that lasts for up to 18 months. Comes with a lanyard for wearing on the neck, and a keychain for attaching to the backpack or bag. Great gift for your kids and students on Birthday, Children's day, Christmas, New Year, and more. Specifications: Case Material: ABS Watchband Material: TPU Watchband Length: 150-220mm / 5.9-8.7in Battery Life: 18 months Color: Girls' set (Blue, Pink, Purple); Boys' set (Grey, Dark Blue, Sky Blue) Color for Boys: Black / Clear Blue / Dark Blue (optional) Package Size: 18 * 15 * 3cm / 7.1 * 5.9 * 1.2in Package Weight: 210g / 7.4oz Package List: 1 * Movement 3 * Watch Case 2 * Watchband 1 * Key Chain 1 * Lanyard 1 * User Manual