Dragonhawk Wireless Tattoo Pen Machine with 7 Stroke Length | Fold Pro We have created a new and updated machine¨CFold Pro changeable wireless or wired. High capacity of battery: With 1500 mAh, the artist can use the machine for a long working duration of 4-6 hours. And when power depletion, the RCA connector can be replaced. LED screen: shows battery, timing, and voltage. Press buttons to adjust the voltage. Instant start-up function: Automatic activation of the start-up function at power on. This means that large rows of needles can be used easily to meet the various tattoo needs of artists. Variable stroke: 2.4/ 2.7/ 3.0/ 3.3/ 3.6/ 3.9/ 4.2 MM¨CFor all artists from Tattoo to SMP.