About this item PRESS AND BEEP SAVES THE APP Key finders that make noise work via radio frequency and need no app. Simply press the coded button on the transmitter, and the corresponding receiver will beep and flash all at once, helping you to easily find the attached item. The button cells last for 6-10 months with daily use, while phone apps often require frequent recharging. LARGE KEY DESIGN, SLIM TAGS The large key design makes operating the key finder effortless. No need to worry about dexterity issues or poor eyesight. In contrast, the tags are slim and light, measuring 1.6 x 1 x 4 inches and weighing just 0.14 oz, making them very convenient for both home and outdoor use. LOUD BEEPER, 120FT REMOTE DISTANCE With a loud beeping volume of up to 85dB, even those with hearing difficulties can easily locate lost items. The RF wave of the tracking device can penetrate through walls, floors, cushions, etc., aiding in tracking down items from up to 120 feet away (tested in an open area).