Uni-ball Vision Micro

ProductMentioned in 1 video

Cal Newport's preferred 0.5 millimeter rollerball pen for taking notes, especially for mathematical proofs.

Videos Mentioning Uni-ball Vision Micro

The Deep Life — Cal Newport

The Deep Life — Cal Newport

Tim Ferriss

Cal Newport's preferred 0.5 millimeter rollerball pen for taking notes, especially for mathematical proofs.