Yocan B-Smart Variable Voltage 710 Battery is sleek and small! The unit is compatible with most 510 cartridges - 2 Click Pre-Heat Setting(2.0v) Great for thick oil cartos.
Compatible with: Most all 510 carto cartridges 2 Click PreHeat Setting(2.0v) – Great for thick oils Variable Voltage(2-4V) Temp Control 320mAh Battery w/ Preheat LED Lighting 5 Click On/Off – Safety Feature Universal USB Charger Included