ZKTeco Metal Detector Wand Scanning Tool High Sensitivity Security Scanner with Indicator Lights, Audio Alert and Adjustable SensitivityBrand: ZKTeco Features: This portable hand held metal detector feature with compact size. High sensitivity, able to detect object as small as a stamp Come with Rechargeable battery and charger; Extra long working hours with single charge (Up to 40 working hours) Controllable sound and vibration effec Low battery voltage (7V) come with same detection range Publisher: ZKTeco Details: ZK D180 is the ZKTeco self developed compact size hand held metal