Luminous Responsive Yoyo, glow-in-the-dark yoyo made from ABS material. Suitable for string tricks (1A, 3A, 5A). Durable design with high performance. Charge the noctilucent yoyo by placing it under light or in sunlight for a few minutes to activate the glow effect. Heavier than standard models, providing better stability without the need for weighting rings. Ideal for daily practice or competition play. Suitable for individuals and families.If the string becomes stuck: 1. Remove the string. 2. Check if the ball is loose; ensure both hemispheres are tightly secured. 3. Reattach the string properly. (This step is critical.)Compatible for moves in styles 1A, 3A, and 5A. Weight: 65g Diameter: 51.03mm Ball width: 41.01mm Shaft width: 4.38mm Bearing: 8-ball U-shaped shaft Screw: 16mm Color: Blue Material: ABS Package Contents: 1 x Yoyo 1 x Pair of gloves 1 x Velvet bag 5 x Ropes (random colors, specific color requests cannot be accommodated) Note: The package includes only the items listed above. Other accessories or products are not included. Note: Lighting conditions and monitor settings may cause slight variations in color representation. Measurement error allowance is +/- 1-3cm.