Function: 1. Handheld metal detector provides a large detection range and also maintains high sensitivity. 2. The alarm indication is clear, you can sound alarm once it is detected, easy to use in practice. 3. Quality assurance, pinpointer keeps a long life, you can use it with confidence. 4. The alarm indication of the waterproof metal detector ensures that noise and vibration occur at the same time. 5. Easy to use, compact in size, hand detector can be carried easily. Specification: Item type: portable metal detector Material: technical plastic Model: 700 Working temperature: -37 C --30 C Waterproof or not: yes Alarm indication: noise and vibration occur simultaneously. Sensitivity: ≥3cm Power supply: 9V foldable battery(6F22ND)(not included) Operating frequency: 12.5 kHz Detection Distance:3m Package List: 1 x user manual 1 x detector 1 x telescopic rope 1 x Detector Cover