Feature:1. Sound and light alarm device, the shell is made of durable plastic, energy saving, light and portable, easy to install.2. 5level adjustable volume and tone, with a red and a green LED indicator, suitable for night fishing.3. Compatible with conventional signal receiving hanger, different types of fishing rod holders can be used in different terrains and times.4. Knob type on or off switch, easy to operate, equipped with highquality speakers, bring clear sound.5. Audiovisual alarms keep you from missing any fish biting, making fishing easier.Specification:Item Type: Fishing AlarmMaterial: Engineering Plastics and Stainless SteelMain Color: BlackModel: 1375Quantity: 1PcBattery: 1Pc 6F22 Type 9V Dry Battery(Not Included)Application: CN Universal Spiral Interface, Suitable for all standard EU Type fishing rod bracketLED Quantity: 1Pc Greenand 1Pc RedLED Indicator Diameter: Approx. 2mm or 0.08inWaterproof: Not SupportSize: Approx. 12.8 x 6.5cm or 5.0 x 2.6inFive-level volume control buttonFive-level tone control button.Package List:1 x Fishing Alarm(Not Included Battery)Note:Please allow 0and 8209 2 cm error due to manual measurement. Thanks for your understanding. Not waterproof.