510 Battery 650mAh LED Smart Screen

Rechargeable Battery: Lithium Battery-Other Series Battery Properties: Rechargeable Battery Variable Voltage: 2.7V / 3.4V / 4.2V Material: Stainless Steel Special Features: Rechargeable Color: Black Battery Capacity (mAh): 650 Charging Port: USB Type C (cable included)
On / Off: Press button 5 times in quick succession to power on / off. Pre-heat: Rapidly press the buttons 2 times to pre-heat. Voltage: Press button 3 times, quickly to change the voltage.