Item Type: Metal Detector Material: ABS Weight: Approx. 200g/7.1oz Product Size: Approx. 24.5 x 4cm/9.7 x 1.6in Battery information: 1 x 9V Battery(Applicable to All Types of 9V Batteries) (Battery Not Included) Temperature Range: -35(-37) to 158 (70) Working Frequency: 12kHz Indicator: Proportional Audio/ Vibration Pulse Rate Control: Power Switch The Sensitivity Distance for Detecting 1 Yuan Coins: Approx. 5cm/2in Detection Method: Vibration, sound alarm, 4 modes can be adjusted, long press the switch button for 3~4 seconds to enter the adjustment mode. 4 Modes: a: Low Sensitivity of Sound + Vibration b: High Sensitivity of Sound + Vibration c: Low Vibration Sensitivity d: High Vibration Sensitivity 1Humanized design, equipped with special hanging accessories, compact body, easy to carry. 2With sound and vibration alarms to indicate the metal objects, the strength of the alarm increases when approaching a metal target. 3With LED flashlight, it helps to work in the dark and low light conditions. 4Stable performance, high?sensitivity design, the detection surface is 360?degree detection, making it easier to find contraband. 5The shell made of high?quality ABS material is wear?resistant, durable and not easy to damage.1. Please allow 0?2 cm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 3. The product is not waterproof, please do not put it directly into the water. 1 x Metal Detector (Battery Not Included) 1 xKnitted StripHolder 1 x Rope Ring 1 x Instruction