Yocan Uni 3.0 650mAh Battery Device - for 510 Thread Cartridge Cartridges

Battery Capacity: 650mAh
Adjustable Voltage 1.8v - 4.2v
Adjustable Cart Holder up to 16mm
Connection: Magnetic 510 Thread Adapter
Charging Port: USB Type-C
1.8v 10-Second Preheating