Vibration on the Wrist Alerts You Without Disturbing Others - No annoying sounds or bright lights; ideal for couples, students, shift workers, hearing impaired and for heavy sleepers. Easy Setup & Works Without the App After Setup - Use your phone to set up multiple alarms, customize alarm days, and switch each alarm on or off Comfort & Easy to Use with Backlight - Positioned on soft washable sweatband for comfort and support; this small vibrating alarm clock has large and backlighted LCD digits for easy reading in the dark Sweatproof Charging Port with Long Battery Life - The charging port of the watch is safe and durable. The metal pins are made of stainless steel and coated with gold, which is resistant to corrosion and rust; runs for 4-6 weeks once fully charged, making it a convenient and reliable device Great Gift Idea - Suitable for birthdays, anniversaries, holidays and any other occasions.