The vape pipe has a digital display screen in the bowl of the pipe to show the user voltage and battery life. The Pulsar DL Pipe can be recharged again and again via the included USB-C charging cable for fully preparing the unit before heading back out to hit the town. Specs: Size: 3.22 x 1.53 x 0.7 inches (82 x 39 x 18mm) Maximum Cartridge Size: 0.55 inches diameter, 2.4 inches length (14mm x 61mm) Battery Capacity: 650mAh Voltage: 2.8V / 3.4V / 3.8 (1.8V Pre-heat) Charging: USB-C Resistance: 0.8-2.0 ? Kit Includes: Pulsar 510 DL 2.0 Battery Bottom Magnetic Connector 2.0 USB charge cable