Plastic Card Smart Anti-lost Alarm

Product information:
Color: white, black, yellow, red, green
Processing Method: Ultrasonic fitting
Interface: wireless charging
Additional features: Bluetooth connection
Material: pvc
Applicable object: Apple device
Applicable people: Apple device users
Battery capacity: 170mAh
Product Size: 8.55*5.4 * 2.7cm
Wearing method: card holder, wallet, passport and other scenarios