Feature: 1. Sound and light alarm device, the shell is made of durable plastic, energy saving, light and portable, easy to install. 2. 5‑level 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 high‑quality speakers, bring clear sound. 5. Audio‑visual alarms keep you from missing any fish biting, making fishing easier. Specification: Item Type: Fishing Alarm Material: 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/0.08in Waterproof: Not Support Size: 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.