1F+ is the Newest Upgraded electric screwdriver which came in early 2019. Pen shape design,made of aluminum with Lithium-ion Battery Charge. 64 IN 1 Screwdriver set, a great helper for electronic repairing projects. Auto self-locking ratchet wheel orientation, with Dual Torque 0.15/3N.m working mode. Comes in 3 different packages to choose from.