Size (length*width*height): 22cm x 19cm x 4cm

What's in the box:

Self Powered Wireless Digital Door Bell Without Battery (1x)

Self Powered Wireless Digital Door Bell (No Battery Needed)

Features:-
LIne Grace,Light Touch Button, Various Kinds of Colors For Your Choice, Bring You Sense Of Vision Enjoy From Lines and Colours
Simple, Vivid Wireless Installation Design Avoid Troubles And Save Money When Installation
Remote Control Up to 100meters Open air and Suitable for High Rise Buildings.
Energy Savings Design
Delicate Smart Part,Make DoorBell a Saluting Angle of Dwelling House, Office Block, Hotel ,HIgh Rise Building, Factory

Special Features:-
Self Powered Technology (No Battery Needed)
Micro- Engerny Harvesting Technology Using Kinectoc Energy to Electrical Energy.
Anti-Interference System , With 100000 Digital Coded Radio Signals
Prevents Door Bell From Interferences Outsides Or Between Neighbour.
4 Chords 20 Musics
Making Stylish Yet Affordable

Usage:
Delicate Smart Part,Make DoorBell a Saluting Angle of Dwelling House, Office Block, Hotel ,HIgh Rise Building, Factory