If you hit your dart on the ground often, dirt can get inside the capsule (under the button and in the USB jack). If you find the button doesn't work well after awhile, you can clean under it - this might not be an issue for you, but if it happens, feel free to contact us and we'll send you tips.
0.25" (6.5mm) 12-strand braided polyester rope, specifically designed for poi, darts, puppyhammers and other tethered props. It's supple and has better abrasion and sunlight resistance than nylon and MFP ropes used in many other props. It won't shrink, has lower stretch, and higher breaking strength. It can be cut with scissors, and you can melt the ends to prevent fray.
A light-weight, no-stretch 100% cotton braided cord recommended by the Rope Dart Academy for optimal dart use. This #6 cotton cord maintains consistent grip even with sweat, and after a brief initial break-in period, offers the ideal amount of friction for dart use for a long time compared to alternatives. Features a 3/16" diameter. Each foot weighs ~2g.