Specs:

MD4030
Coloration: Black
Materials: ABS Plastic + Aluminum 
Sensitivity: Min. 130mm / 5.12" (Check Coin: US Φ 25)
Detect Objects: Steel(Iron nail, iron masking, aluminum ring, small aluminum product, cash, gold, bronze, silver)
Detection Mode: All Steel, Discrimination 
Working Frequency: 5KHZ 
Energy Provide: 2 x 6F22 9V Batteries (Not Included)
Working Present: Standby 10mA(LCD with backlit shade 80mA)
                               Max 70mA(LCD with backlit shade 150mA)
Working Voltage Vary: 9V
Detection Indication: Mechanical Pointer Mode, Audio Mode
Management: Energy Swap
Sensitivity: Adjustable 
Detection Depth: 10-30cm / 3.94-11.81inch
Quantity: Adjustable
Adjustable Peak of Detector: 78-107cm / 30.71-42.12inch
Utility: Testing metallic international physique of uncooked supplies, gasoline and meals, Detection of underground pipeline & line, Archaeology, Exploration, Discovered buried treasures of gold, silver and metallic artifacts, The acquisition of scrap metallic trade, Customs and security inspection, Police division detective search, Detection of interpol search, Checking metallic international our bodies in categorical supply and baggage. 
Working Temperature: -15~45℃ / 5~113℉ 
Storage Temperature: -20~60℃ / -4~140℉ 
Merchandise Dimension: 107 * 27 * 16.5cm / 42.12 * 10.63 * 6.50in
Merchandise Weight: 862g / 1.90 lb
Package deal Dimension: 54 * 22 * 11cm / 21.26 * 8.66 * 4.33in
Package deal Weight: 1.28kg / 2.83 lb