2 In 1 Underwater Metal Detector IP68 Waterproof 60m Submersible Detector 1. With three detection modes: audio, vibration, audio and vibration, you can change the mode according to different needs 2. IP68 waterproof rating, can be used underwater 3. Lost alarm function: With this function, you can find the device more easily to avoid losing it. If no button is pressed or no target is detected within 1 minute, the lost alarm will be activated. After starting to sound at short intervals and the LED flashing light starts flashing for 30s, it will automatically shut down in order to save power 4. Allows quick conversion from scuba detector to pointer, saving time 5. With diving mode, sensitivity has 3 levels of adjustment, can be changed according to different needs 6. Material: ABS 7. Working principle: pulse induction 8. Working frequency: 3khz 9. Waterproof level: IP68-60m 10. Power supply: 1 x 6F22 alkaline battery (not included) 11. Detection mode: audio, vibration, audio + vibration, LED 12. Sensitivity: 3 levels adjustable 13. Weight: about 453g Packing list: - Control unit x 1 - Pointer coil x 1 - Diving coil x 1 - User manual x 1