Experience the power of MUSOTOKU concentrated in a wireless battery for your Cheyenne tattoo machines. The ROVER R-1 is powered by easily replaceable Li-ion batteries, ensuring non-stop tattooing with spare batteries always ready to keep you focused on your work. Simply put: when you need a recharge, swap in a fresh battery and keep working. <h3>Design</h3> We've focused on what matters to you most: Consistent power regardless of battery percentage Compact size Durable connectors, and our iconic aerospace-grade aluminum design. All with simplicity in mind. And of course, travel hassle-free with Rover's removable battery, approved for air travel. <h3>Specifications</h3> 5V to 12V voltage output adjustable in 0.1V NITRO pulse injected on every startup Brushless motors: Customized start up sequence to indulge these sensitive motors. Power Level: Always maintained without decreasing no matter what's the battery percentage Health Monitoring: gt1,000 checks/sec to ensure that your tattoo machine is running smoothly Size: 30 x 69 mm (4.5 x 1.2 in) Weight:nbsp72 gr (2.5 oz) with battery Connectors: Minijack 3.5 (compatible with all Cheyenne machines, including Thunder) Display: OLED 0.49 inch Battery: Li-ion 1835 Flat <h3>What's included</h3> ROVER R-1 battery pack 2x 1835-Flat Li-ion Batteries + case USB compatible External charger for batteries + cable Instructions