Size: About 38x38*7mm Support find Phone Function and Voice Recording Function Compatible for IOS or Andriod Smartphone Please allow 1-2cm error due to manual measurement. Low Energy Consumption -Lost Alarm The colors may have different as the difference display,pls understand. Material: Works as a remote Shutter for Self , the Valuable Moment Easily Support Bluetooth 4.0 and The effective Range is up to 25m Pls make sure you do not mind before you bid. Compact and Light Design If you have any problems, please contact us before open the dispute or give negative , we will try our to help you, thank you! Track your car on Parking Lot and Retrieve your lost items Suitable for Wallet, Car, Kids, , Bags, Suitcase or other belongings 1 x Smart Alarm Device Colors: Pink, Green, White, Black If You Have Any Problems, Please Contact Us Before Open The Dispute Or Give Negative , We Will Try Our To Help You, Thank You! Material: Support Find Phone Function And Voice Recording Function Please Allow 1-2cm Error Due To Manual Measurement. Track Your Car On Parking Lot And Retrieve Your Lost Items