Jakcom R3 Magic Finger NFC Ring Smart Ring Wear for Android Windows NFC Mobile Phone it can be changed to

it can be changed to Millivoltmeter

1 x 510 Delrin Drip Tip

USB On-the-Go function allows it to act like a power bank for emergency charging

24inch(W)* 1

Perfect for sports

Jakcom R3 Magic Finger NFC Ring Smart Ring Wear for Android Windows NFC Mobile Phone it can be changed toProduct Features: Jakcom R3 Magic Finger Smart Wear Can connect IC ID NFC Card Reader like doorlock or cellphone to Unlock, Pay, Share information or operate some mobile function Health module: Remove infrared ray and adjust body function by the FIR Energy Stone and the volcano magnet. Lock and unlock your Smart phone or tablet quickly, hide the app when you leave your smart phone alone. Share & Transfer information (send the private message Picture