Callstel Set of 4 credit card size 4in1 key finder, GPS locator, app.

Save yourself the hassle of searching for misplaced items: Simply connect your new key finder to your mobile device via Bluetooth and attach it to your wallet, keychain, handbag, and more. You can check the location of your items anytime through the app. Thanks to its ultra-slim design, it fits perfectly in the credit card slot of your wallet.

Easily find your items with an extra-loud signal: Use your smartphone to trigger a practically unmissable sound from your key finder. Conversely, you can also trigger sounds on your smartphone using the key finder. This way, you can quickly locate everything.

Effective theft protection: If someone removes the key finder from Bluetooth range, an alarm will sound on your mobile device and/or the key finder, if desired. At the same time, the last registered location is automatically saved. For example, equip your bicycle with this clever finder!

Convenient extra for photography: With a simple press of a button on the key finder, you can easily take photos with your smartphone. Ideal for perfect selfies and group photos!

Fits perfectly into the credit card slot of wallets and more thanks to its ultra-slim design. Two-way find function: Trigger a sound on the key finder via smartphone or trigger sounds on your smartphone via the key finder. Theft protection: Alarm sound on the smartphone and/or key finder when the Bluetooth connection is lost. Location marker: View the last location of the key finder in the app (uses the smartphone's GPS). Remote shutter for smartphone camera: Take photos with a button press on the key finder. Range outdoors: up to 50 m, indoors: up to 20 m. Signal volume: 98 dB. Free app for Android and iOS: manage up to 5 key finders. Bluetooth for connection with smartphone and tablet. Power supply: built-in, non-replaceable Li-Po battery with up to 2 years of battery life. Dimensions: 85 x 54 x 3 mm, weight: 10 g. Includes 4 key finders and a German manual.