Model: SM 7CA Make: Sivananda Detects Minute Quantities Of Gold, Silver, And Platinum, Brass, Copper, Mild & Stainless Steel Effectively. Rechargeable Battery And Charging Cord included. Ultra High Sensitivity & Stability.
0.1 Gm : Dist. 20mm
Razor Knife (Plastic Handle) : Dist. 80mm
Gold Ring 4gm : Dist. 80mm
Coin 9.5 Gm : Dist. 80mm
Power Consumption : With Led On 10.4ma,
 Led On Sound 19.4ma
Battery Life : Several Month Of Intermittent Use.
Length : 330mm
Width : 110mm
Depth : 38mm
Weight (Including Bty.) : 374gm Easy to use. One switch operation. Ultra high sensitivity for Jewelry and minute metal detection.