Uwell Caliburn X 20W Pod Kit offers an integrated 850mAh battery that help delivers plenty of vapor throughout the day with 5-20W output range. Equiped with refillable pods that hold up to 3mL with a juice viewing window to ensure a minimum fill level to prevent any dry hits or burning of the coil. and is compatible with both G/G2 Coils. Constructed from durable aluminum-alloy, the chassis of the Caliburn X Pod Kit features a strong and resilient chassis against light falls and drops.