The Bishop x Critical Advanced Battery Pack is engineered to enhance your tattooing experience with advanced features, including a color display, Hertz read-out, and dual voltage presets for effortless adjustments. Known for Critical's trademark reliability, it delivers consistent power to ensure smooth, uninterrupted performance in every session. With a Jumpstart function for handling challenging needles, a session tracker to keep tabs on hourly rates, and extended battery life for longer sessions, this precision-driven tool is built to optimize your workflow and performance.