The KA12QH B22 Metal Detector can pick up small masses such as sim cards through fabric such as jeans. It can also pick up slightly larger masses such as Allen keys through clothing at more of a distance.
High Sensitivity Metal Detector Wand Can Detect Smaller Masses
Control Panel 3 Sensitivity Levels All 3
Standard Alert Types including Vibrate Detects Ferrous and Non-Ferrous Metals