Specifications Origin: China Certification: CE, RoHS Case material: plastic Dial material: acrylic Band material: PU Water resistance: 3ATM Style: sport Movement: digital Clasp type: buckle Band length: 250mm/9.8in (fits wrist size 145212mm/5.78.3in) Band width: 22mm/0.86in Case thickne: 14mm/0.5in Dial diameter: 50mm/2.0in Battery: LR54, LR1130, AG10, L1131F-C10 Instructions 1. Set the time: Pre 'M' 3 times until the setting place flashes. Pre 'S' to set. Pre 'R' to change. Pre 'M' to save. From the time interface, pre the 'M' key 3 times to switch to the time-setting mode. When the "second" number flashes, pre the 'S' key once. This will clear the second number. You can then set the time. Pre the 'R' key once to switch to the "minute" number (so it is flashing). Pre the 'S' key to adjust the minute. After the minute is set, pre the 'R' key to switch to the "hour" setting (so it is flashing). Pre the 'S' key to adjust the hour. If the letter in the upper right corner is 'H', it is set to the 24-hour system. If it says 'A' or 'P', it is the 12-hour system ('A' is AM and 'P' is PM). 2. Set the date: Pre the 'R' key to switch to date adjustment. When the date number flashes, pre the 'S' key to adjust. Pre 'R' to change to the "month" setting. When the month flashes, pre 'S' to set the correct month. Pre the 'R' key to switch to the "day" of the date adjustment. The top row of the week box will flash; pre the 'S' key to adjust so the correct day is flashing. Pre 'M' to confirm and return to the time display interface. 3. Set the alarm: Pre 'M' twice until the setting place flashes. Pre 'S' to set. Pre 'R' to change the setting and pre 'M' to save. Pre the 'M' key twice to switch to the alarm mode. The "hour" will flash and then pre 'S' to adjust the hour. The alarm time is set in 24-hour mode but will synchronize to the watch time no matter whether the mode is set to 12 or 24 hours. Pre the 'R' key once to switch to the "minute" setting (so it is flashing), then pre the 'S' key to adjust. Pre 'M' to save and return to the time display interface. 4. Alarm on/off: Pre and hold the 'R' key in the time interface, then pre the 'S' key to turn the alarm on or off. 5. Snooze function: When the alarm sounds, pre the 'S' key. The alarm will sound again after 5 minutes. Pre the 'R' key to turn off the alarm sound. Instructional Videos 1. How to turn off the hourly alarm(chime)?