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/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 + 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 Green+ 1Pc RedLED Indicator Diameter: Approx. 2mm/0.08inWaterproof: Not SupportSize: Approx. 12.8 x 6.5cm/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 0‑2 cm error due to manual measurement. Thanks for your understanding. Not waterproof.