Mast Tour Rotary Pen Machine vs Mast Tour Red Wireless Rotary Pen

Both are the same Mast Tour pen platform: 82 g, 25 mm grip, 3.5 mm stroke, 4V start, 9000 rpm at 8V, and universal cartridge compatibility. The Tour Red is the more complete package because it adds on-unit voltage control, a battery level display, voltage memory, and charge protection, and its listing states an adjustable throw. The Rotary Pen kit bundles a wireless battery and USB-C adapter and is sold in several colors, but its own listing says the stroke is fixed and all sales are final. Buy the Tour Red for the better electronics and support; buy the kit if you want the battery and adapter in one box.

• Choose the Mast Tour Rotary Pen kit if you want the machine, wireless battery, and USB-C adapter bundled together and a color choice matters more than on-unit controls.
• Choose the Mast Tour Red if you want on-unit voltage adjustment, a battery level display, voltage memory, and stated charge protection.