Handheld Metal Detector: High-Precision Compact Security Scanner for Exam Rooms, Cell Phones, and Outdoor Use

MD-3003B1
Sensitivity: Standard sensitivity
Power Supply: 9V battery
Continuous Operating Time: Over 40 hours
Alarm Type: Dual alarm (vibration and sound)
Transmission Frequency: 22 kHz
Dimensions: 410 × 80 × 42 mm
Operating Temperature: -10°C to +55°C
Weight: 320 g (without battery)

GP-3003B1
Sensitivity: Standard sensitivity
Power Supply: 9V battery
Continuous Operating Time: Over 40 hours
Alarm Type: Dual vibration and audible alarm
Transmission Frequency: 22 kHz
Dimensions: 410 × 80 × 42 mm
Operating Temperature: -10°C to +55°C
Weight: 400 g (excluding battery)