1. Stylish modern design fits into any home and office.
2. 52 ringtones(16 chord)to choose from and 4 steps volume control(25~110dB).
3. Simple to use and easy-to-install without the hassle of running any wires.
4. With up to 300m operating range in open space,100m audible range.
5. Using learning code to prevent interference from other wireless transmitters.
6. Easy to choose your change and select your favorite ringtone with forward and backward button.
7. Automatically save selected ringtone after power off.
8. Approved with CE,FCC,RoHS certification.