The machine, then the session.

HPTA is a four-machine battery lineup: three short pens and one adjustable stroke pen. Each product page lists the stroke, motor, voltage, battery, and the finishes that are actually in stock.

Choose by the way you work

Take a short pen when you want a compact body and a fixed 4.0 mm stroke. Take RS when you need to move between 2.4 mm and 4.2 mm and read the setting on an OLED screen.

The lineup

• J-7, L-9, and P-8 — wireless short pens, 4.0 mm stroke, 1500 mAh, about 4.5 hours at 8V
• RS — adjustable stroke, OLED display, 1800 mAh, about 8 hours, 275 g, 37 × 141 mm

HPTA is presented by SEISHIN CO., LIMITED. Registration details are available to partners on request.