Low power consumption: Provide 8 high-quality CR2032 batteries, standby for up to 1 year.it's definitely your best choice. If any wonder, please contact with our customer service team for help. Two Kinds of DIY Stickers: To save your time, we offer 2 types of stickers for the Chlovoe key finder that you can use to combine buttons with items. Easy and quick to locate: NO phone and no app required. Simply press the appropriate color-coded buttons. The receiver sounds / beeps so that you can find your lost item within 40 meters. Sound and Light Alert & Built-in Flashlight : Up to 80dB beeping sound (Walls and other obstacles will reduce the sound level.) Transmitters and Receiver is equipped with a LED light that provides better night vision when positioning the buttons. Two Sets Advanced Fabric Transmitter: Advanced fabrics are more comfortable to touch. No matter in office, living room, bedroom, car or elsewhere,Any of the transmitter can lead you successfully to the lost items. Doesn't make you upset even if you lose one of them.