Function
door bell alert, alarm clock with vibration
Door bell button/reminder
yes, 37 ring tones for optional
Beep choice
vibration+alarm+flash light
Adjustable brightness & Volume
Yes
Accessories in box
clock,vibrator, manual, DC cable, door bell button & reminder etc
Power Supply
AAAbattery * 3pcs or USB cable
Application
Bedside for hearing loss, visual impaired and elderly