Model: ZA300 Weight:250g Size:360(L)*82(W)*42.5(H)mm Package size:370 *100 * 50 mm Package weight:0.5kg Sensitivity Level:Low sensitivity, low sensitivity , high sensitivity and ultra-high sensitivity (can detect single staple) Alarm mode:Vibration , sound , vibration and sound three alarm mode , the operator can judge size of the metal by the sound light . Power supply:two pcs battery 5#, (rechargeable battery is optional) Working time:More than 80 hours Operating temperature:-25℃--60℃ Material:Shock-resistant and impact-resistant ABS plastic.