Walsoon BK1519 20W 126dB Hunting Bird Sound Mp3 Caller Speaker Built-in 20W 126dB speaker,support a external speaker of 6V and support a external speaker of 12v Built-in 2200mAh rechargeable battery Built-in 150 bird voices.Some countries are not allowed to import the bird products and we will cancell the voices to ship,while you receive the caller,welcome to ask the voices from us by mails)