Single - Chip Led ชุดนาฬิกาดิจิตอลอิเล็กทรอนิกส์ Diy พร้อมฝาครอบใส

single-chip LED watches electronic clock kit DIY LED Digital Watch Electronic Clock Kit With Transparent Cover Feature: Name: LED digital watches Operating voltage: 3V Power supply: CR2025 button battery (as gift for testing, inevitably there are additional factors causing low.) Display: Red LED display Installation: Need DIY welding assembly Clock adjustment: Key regulator Whether saving power: Five seconds automatically enter power-saving mode. After all, LED display is more power consumption, so a battery life is not very long. About half month need to change a battery. Waterproof: NO Size: 16mm diameter, 54mm thick, strap: 2 x 25cm Weight: 48g