The USV ARC 240 Mod is a lightweight dual battery device that packs a huge punch. Featuring the next generation VO240 Chipset, the ARC is capable of providing up to 240W of power and features a robust temperature control suite. Dual 18650 batteries are configured to work in series provide ultra-low response times to produce the thickest and tastiest clouds. USV ARC 240W TC/Bypass Box Mod Features and Specification: Size:86.5 x 61.3 x 30 mm Lightweight ABS Construction Batteries Required: 18650 (2) 32-bit ARM Processor 0.91” Color Display Power Mode: 5-240W (1W Increment) Power Profiles: Normal, ECO, Sports Temperature Control Suite: 200-600°F (Ni, TI, SS316 coil supported) BYPASS mode: provides maximum current output Resistances Supported: 0.1Ω- 2.0Ω Input Voltage: 6.4V-8.4V Output Voltage: 3.0V-8.4V