Digital writing system and ballpoint pen in one writinginstrument. Twist mechanism to change between systems.2 in 1 / Twist-action mechanismBallpoint pen refill LAMY M 21 blackDifferent materials for different surfacesNibs exchangeableTechnology: Wacom EMR (patented)Replaces standard stylus productsMore than 4,000 pressure levelsPalm rejectionWireless, battery-free operationASA plasticMetal clip, blackErgonomic plastic gripList of compatible devices