Weigh your fish without harming your catch by simply clipping the Mini Grip or full-sized fish grip in the lower jaw. Product Details: Waterproof, 50 kg/110 lb Digital Scale Multiple unit settings (kg, lb, lb:oz) Weight in 100ths of Pound with Hold Function Big LCD Screen with Blue Backlight for easy night weighing Auto-lock weight within 1.5 seconds Audio bleep when lock the weight Automatic on/off function Requires 2 AAA Batteries (not included) Magnetic hook storage Low battery indicator Overload protection Tare function to zero weighing slings Built in thermometer INSTRUCTIONS: Power On: Lower Centered Button Unit Tab: Scroll to desired function of kg/lb/oz Wait for zero-out (0.00) Weigh fish If you are not sure if weight locked in correctly, take weight off of weight hook, hit reset, zero-out, re-weigh.)