50Ft waterproof depth.LCD Screen display signal level. Components and Function: Powering On Press and release button while holding the detector away from any metallic objects. You will hear 1 beep. Powering Off: Press the switch for one second for power off. Low Battery Alarm: When the battery becomes lowwork voltage, the detector will sound warning alarm.And check distance will short.after warning alarm10 seconds.it will turn off automatically.Replace the 9V battery as soon aspossible. Battery Replacement: Simply rotate battery covercounterclockwise to remove and clockwise to tighten by hand. To properly install the 9V battery, match the larger battery terminal to the larger opening in the compartment. Remove the battery when the unit is to be stored more than 30 days. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Tuning: Automatic Control: Power switch Frequency:10khz Battery: Single 9V (not included) Colour:Black+Orange Material:ABS Package Contents: 1 x Metal Detector 1 x English manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.