Waterproof design， it can be used outdoors in the rain， easy to install， functional and very practical 8 different sounds， choose your favorite one. Material: high quality engineering plastics Great product you cannot miss today. Color: black Size: about 9 x 6.5 x 3.5 cm Cable length: about 22 cm Package size: about 10 x 7 x 5.5 cm Suitable snap ring installing diameter: about 3 cm Working voltage: 2 x AA battery (not included) Light mode: 1. 5 LED keep lights bright light 2. 5 LED lights quickly flash 3. 5 LED lights slowly flash 4. 5 LED lights quickly flash from right to left 5. 5 LED lights quickly flash from left to right 6. 5 LED lights one by one quickly flash back and forth 7. 5 LED lights one by one slowly flash back and forth 8. Close Package:1 x Control box 1 x Snap ring In original package