Warriors (WOS for short) name; E90 wireless tattoo pen transmission mode; Material Science; Aviation aluminum. Battery; Can work for 10 hours. Motor; Brushless external rotor motor, with a diameter of 33mm and a height of 131mm. Large grip: 186 ，grams Small grip: 166 grams，feature; Adapting to different work scopes, each artist can find their favorite work route, and comes with two Panasonic batteries that have a lifespan of up to 10 hours and can be used all day. It takes 2-3 hours to fully charge, Normal mode and adjustable Hertz mode can be freely switched, with Hertz adjustment adjustable from 3-88. In Hertz mode, the voltage output can also be adjusted to 6v-8.5v. Adjustable from 4.5v to 9.0v in normal mode. The 4.5V frequency ranges from 38 Hz to 140 Hz. Two Panasonic batteries are standard. Paired with the same transmission system as the e80. The stroke is adjustable from 3mm to 5mm. Soft bag with 0-1-2-3-4-5 models for precise control of rebound distance. Make every stitch of yours precise. The motor has been redesigned with larger torque parameters (we have achieved lifelong free maintenance for the motor), which extends the lifespan of the motor infinitely The two handle sizes of 33mm and 38mm allow you to switch freely. It is recommended to use a 38mm handle for traditional large-scale work. The grip feels very confident and effortless. Realistic and precise work using a 33mm handle. Delicate, accurate and error free. Easily master detailed operations. The physical buttons on the color screen are visually clear and there is no need to worry about accidental touch. The adju