Rope: optical cable 4.5mm diameter and 2.8m length
No battery in the package, and you need to prepare 4x AA battery by yourself.
there is a led in both handles, and the color is fixed that can not switch color and brightness.
and the handle is with wonderful touching feeling, it is not just for kids, it is suitable for adults, and you can directly cut the rope to adjust the length. and with regard to the rope hardness, it is around 80A hardness, not so soft , since it is the optical cable it needs a certain hardness to keep its performance.