【EASY,QUICKLY TO LOCATE】 - Can't find your lost items? Just press the button and follow the beeps! locating any items like keys, wallet, TV remote control, keychain, glasses,dog collars or other things that are easy lost through the provided keyrings.【LOUD ENOUGH AND LONG DISTANCE RANGE】 - The sound is 80-95 dB, loud enough to hear from the upstairs level, behind a pillow, in a coat pocket, etc. Easily penetrates through walls, cushions, and doors to find the key. Perfect working Range.【ULTRA-LONG BATTERY LIFE】 - replaceable CR2032 battery; You can easily replace it yourself.【AGREAT GIFT】 - When you're scrambling to find your things, this key finder set is the ideal thing you need. No matter use it yourself or send it to your aging parents or forgetful friends, it will definitely make them delightful.【KINDLY SERVICE】 - If you are not satisfied with the key finder, you could contact us for a refund or replacement anytime.