Portable Hand-Held Security Metal Detector (GP 3003B1), GP 3003B1 Broadband Amplifiers 40HQ: 572 cartons * 8

40HQ: 572 cartons * 8 pcs = 4576 pcs

Sunlight mode

01uT (magnetic)

Support system: Android / Windows 2000 / XP / Vista / Windows 7/8/10 Mac OS

seconds radio waves

Portable Hand-Held Security Metal Detector (GP 3003B1), GP 3003B1 Broadband Amplifiers 40HQ: 572 cartons * 81) Highly sensitive 2) Simple and convenient to use, no adjustment is required; 3) The detection distance will not be changed when the battery voltage drops from 9V to about 7V; 4) Low power consumption, can work for 40 hours continysly; 5) There is automatic and continues alarm when the battery is used up; 6) Switch on off audio prompt function; 7) Witch external rechargeable socket hole; 8) Has audio, light and vibration hand off switch 9) Detection