Vaporesso XROS 4 Nano is a 30 watt pod system with an internal 1350mAh battery, a digital LED screen, and is cross compatible with all XROS replacement pods. The Vaporesso XROS 4 Nano 30W Pod System is the latest release in the XROS series of devices. Continuing the pocket friendly dimensions of the previous XROS Nano device, the XROS 4 Nano still packs a punch when it comes to battery life and power. The internal 1350mAh battery is the largest battery XROS on the market. The chassis is constructed from a lightweight yet durable aluminum alloy, providing both comfort and longevity. Vaporesso provides customers with the ability to adjust their specific wattage level, only while using the new 0.4 ohm XROS Pod, which comes with the XROS Nano 4. *Please note: Wattage adjustment will only work with the new 0.4 ohm XROS pod. The standard mode adjustment applies to all other resistances of XROS replacement pods. Quick Link: Vaporesso XROS Pods Product Includes: 1 x Vaporesso XROS 4 Nano Battery 1 x 0.4ohm Mesh XROS Pod 1 x 0.8ohm Mesh XROS Pod 1 x Type-C USB Cable 1 x User Manual 1 x Lanyard Check out the Vaporesso XROS 4 Nano Pod System infographic to help you better understand how it works! Product Specifications Dimensions: 56.5mm x 55.25mm x 20.9mm Battery Capacity: 1350mAh Wattage Range: 1-30 Watts Pod Compatibility: XROS Series Replacement Pods Chassis Material: Aluminum-Alloy Display Screen: 1.3" TFT Color Display Screen Operation: Draw Activated  Charging: 2 Amp USB Type-C Pod Connection: Magnetic Coil Installation: Press-Fit  Airflow: Adjustable Switch