619U/BT
Functions:  Talk, Alice, Siren£¬Bluetooth and USB and TF card P1ay,
260 Seconds Voice Recording Funct ion,
Power Output: 10w Rated / 20w Max,
Power supply :3. 7V  1200MAH lithium battery,
Dimensions: Horn Dia. 130mm, Length2 10mm
Color: blue and white, red and white