With three detection modes: audio, vibration, audio vibration, you can change the mode according to different needs. IP68 waterproof rating, you can use this product underwater, not just on the ground, exping your detection space. Lost alarm function: With this function, you can find the device more easily to avoid losing it. If the button is not pressed or the device does not detect any target within 1 minute, the lost alarm will be activated. The device starts beeping at short intervals the LED flash starts blinking for . Afterwards, the device will automatically shut down to save power. This device allows for quick conversion from scuba probe to precision pointer, saving you time money. With diving mode, the sensitivity has 3 levels to adjust, you can change it according to different needs. The factory batches are different. If there is any color difference in appearance, it will not affect the product. Colour:yellow-black Material:plastic Package Contents: 1 x Hheld Metal Detector 1 x English manual Only the above package content, other products are not included. Note: Light reflection different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is and\/- 1-3cm.