The Quad 2 proves that being square is stylish! Its square shape prevents it from rolling away, protecting your cartridges from breaking. The futuristic tech grip adds a cool touch. The LED screen keeps you connected, showing battery percentage, voltage, and accessory status. The Quad 2 even displays different goodbye messages when you turn it off (by clicking 5x), adding a unique personality. With True Fast Charge, you can go from 0% to 100% in 20 minutes using a type-C cable. It also supports pass-through charging, so you can use it while it charges. Using lower voltages is better for 510 cartridges, preventing coil burn and preserving oil quality. The Quad 2 auto-shuts off after 10 minutes to save battery. It has a 500 mAh battery, lasting many sessions at lower voltages. Charge it using the included Smart USB charger or a type-C charger (sold separately).