Variable stroke: 2.4/ 2.7/ 3.0/ 3.3/ 3.6/ 3.9/ 4.2 MM–For all artists from Tattoo to SMP. High capacity of battery: Capacity of 1500 mAh enables artists to work for a long duration of 4-6 hours. When the battery has run down, the RCA connector can be replaced.
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