About this item 1.Digital Watch: Fashionable sporty dial design. Large Dial and numbers with light, show time clear in the dark. Use import EL Lamp, easy to see the time clearly in the light, easy to read. 2.Men's Watch: Appeals to men, especially to those who like doing sports, shock resistant, stopwatch,12/24H time mode, and LED backlight functions to make it perfect for all kinds of sport and daily use 3.Sports Watch: Shock Resistant, perfect for both outdoor and indoor sports, such as running, climbing, fishing, etcShock Resistant, perfect for both outdoor and indoor sports, such as running, climbing, fishing, etc 4.Multifunction Watch: Digital time zone, Auto Date, Alarm, Water Resistant, Shock Resistant, Stop Watch, Timer, Back Light 5.Waterproof: 50M water resist, only wash hands, shower, Satisfy daily usePlease DO NOT press any buttons underwater. Maintenance method 1. Special remind everyone that any watch should not be worn in warm water or bathroom, even if your watch is waterproof, because the sealing roll rubber of the watch is easy to age when heated, and the water vapor molecules around are relatively small, which can easily penetrate into the case. , Causing internal mechanical damage.    2. If the watch is abnormal, it should be sent to a special watch shop for inspection immediately.    3. The mechanical automatic watch must be in the condition of sufficient activity, that is, it must be worn for more than 10 hours a day before it can operate normally.    4. Different watches should be worn on different occasions. For example, it is best to choose a sports watch with excellent waterproof and shock resistance when exercising.    5. If there is a watch labeled WATER RESESTENT or 3ATM on the watch cover, it is generally only suitable for water spray or light rain under no pressure. 6. Since the internal mechanical structure of each watch is different, under normal use, the error of a mechanical watch or a mechanical automatic watch is within 30 seconds per day (this standard is promulgated by the national ministries and commissions), while the quartz watch’s The error is lower and more accurate.