1.69-inch 6-color E-Ink Screen Anti-lost Device with E-Paper Smart Luggage Locator Keychain Blu & NFC and Changeable Pattern

Resolution:400*400
DPI:236
screen colour:6colurs
Outer dimension: 54*85.7*3.2mm
Weight：23.7g
Material:Tempered glass + aluminum alloy
Battery Li-On rechargeable :100mAh
Charging method:QI Standard Wireless Charging
BLUETOOTH 5.1 ,distance within 10meters