1. Support Remote for 500M.
2. Built-in speaker 20w 130dB, support external a speaker 5v and a speaker 12v.
3. 3.7V Li- battery 2200mAh.
4. Timer on/off .
5. 150 birds songs.
6. LCD 1.5 inch display.
7. Caller Size: 128*60*30mm
8. Remote Size: 134*50*13mm