About this item Slim SmartCard - This wallet tracker card features an ultra-slim design, approximately 1.6mm thin, seamlessly fitting into most wallets. It is designed to attach securely to wallets, ID cards, and luggage tags for added convenience. Compatibility with specific electronic devices or oversized passports may vary. Privacy Protection - Assured data security. The smart card tracker never stores your location data or history publicly. All location information is anonymous and encrypted. Wireless Charging - Simplify charging with wireless technology. A full charge lasts up to 5 months, indicated by a color-changing LED light. This wallet card can be reused multiple times. Find Nearby - Within a Bluetooth range of up to 164 feet, trigger the built-in speaker to locate your belongings via your phone or ask Siri. It offers easy tracking through the 'Find My' app. Left-Behind Remind - When the card tracker for wallet is out of Bluetooth range, your phone will receive a notificatio