Key Features Dual-power by 9V or 2X AA battery LED/Buzzer/Vibration Alert For 3M underwater operation Re-tune control Ribbed and ergonomic body Easy to use two buttons control Lost alarm Lanyard attachment loop cap Target locking function LED flash light Technical Specifications Operating Temperatures - -35º F (-37º C) to 158º F (70º C) Length - 10” / 25cm Weight - 200g with battery Thickness - Max 3.8cm Battery - By 1 x 9V or 2 x AA batteries Water & Dust Protection - 3 meter Waterproof Operating Frequency - 95 kHz Pulse Induction Tuning - Automatic or manually (retune) Indicators - Audio / Vibration LED Bearn Lights Response will be intense when probe close to the object Controls - Power switch (On/Off) Mode Control LED flashlight (Once power on)