1. Bluetooth 4.0 technology: Adopts Bluetooth 4.0 technology to ensure a stable connection with smartphones and tablets, provides fast and reliable device tracking. 2. Ultra-long battery life: Powered by a single CR2032 button cell battery (included), with long battery life, reducing the frequency of replacement, economical and environmentally friendly. 3. Multifunctional tracking and reminder function: With the two-way tracking function, the keychain can be triggered by the smartphone's beep and vice versa; at the same time, it has the location marking function that saves the current location coordinates on the Google map with one touch, as well as the anti-theft alarm function that will be alarmed by the smartphone when the keychain is out of the range of the Bluetooth connection. 4) Intelligent additional functions: It can be used as a remote shutter for the smartphone camera as well as a voice recorder, which is convenient for users to record voice memos and improve the convenience of life and work. 5. Lightweight and portable design: Measuring only 55 x 9 x 33 mm and weighing only 6 grams, the lightweight design is easy to carry and does not add extra burden to the user, and the black appearance is stylish and understated, making it suitable for a variety of occasions.