Designed for comfort and effectiveness, the Uwell Caliburn A2 provides a compact, smooth pod system that delivers an Excellent vaping knowledge. The Uwell Caliburn A2 15W Pod Method attributes an integrated 520mAh battery, 15W most output, and employs the new 0.9ohm Caliburn A2 Pods.Built-in 520mAh Rechargeable Battery - Built from strong aluminum