SIDDHI VALIDATOR S-167 - hand-held type Metal Detector, operates on rechargeable and disposable dry battery & is a rugged, light weight detector designed to detect hidden metal objects, on a person. VALIDATOR S-16 - A has a large scanning area with an ultra-high sensitivity and is capable of detecting metal as low as 1 gmGold ring 4 gm : 80 mmMETAL DETECTORSales Package: batteryBrand: siddhiModel Number: Mix Pack S - 167Type: WirelessPower Source: 230 VMaterial: AbsColor: Black, GreenBluetooth Enabled: NoWifi Enabled: NoCompatible Devices: electronicRange: 0.1Width: 3 inchHeight: 7 inchDepth: 1 inchWarranty Summary: against manufacturing defectNot Covered in Warranty: battery