Feature: 1. ERGONOMIC DESIGN: Fingertip rotating toy features a practical design with 2 metal bodies containing rolling bearings and magnets, for a smooth and satisfying user experience. 2. STRESS RELIEF: Useful for those who experience irritability, anxiety, ADHD, inattention or autism, fingertip gyroscope is also great for breaking bad habits such as nail biting. 3. HIGH SPEED SILIENT ROTATION: Built in high speed silent bearing, excellent centrifugal force design, providing you with silent rotation, long rotation time, can last 6‑8 minutes. 4. DURABLE AND PORTABLE: The compact size and lightweight of this bearing rotation toy makes it easy to store, carry and is safe to handle, even for children. 5. UNIQUE DESIGN: With its well structured mechanism, which brings unique and vintage style to its users through its beautifully engraved surface for a personalized touch. Specification: Item Type: Fingertip Gyroscope Toy Material: Alloy Size: Approx. 5.8 x 5.7 x 1.5cm / 2.28 x 2.24 x 0.59in Metal Purple Light Battery: 4 x 40mAh LR41 button cell (built in). Package List: 1 x Fingertip Gyroscope1 x Disassembly Piece1 x Metal Purple Light1 x Spare Bearing1 x Hand Twist Accessories1 x Storage Bag