1. Anti-loosening Battery Lock - Prevent battery shift during flight, secure fixation, collision- 2. Stable Install & Precise Lock - One-click secure attachment with anti-vibration design. 3. Aerodynamic Design - Streamlined to reduce drag, improve flight efficiency 4. Design - Light materials, 5.8g only, no impact on battery life 5. Sleek Lines & Speed Aesthetics - Airflow-optimized reduce drag, stabilize flight Anti-fall Buffer & Landing Protection - Tail wing absorbs impacts, prevents battery loosening. Extended Playability - Multiple ports, toy-compatible, easy to expand. Color:Grey Material:plastic Package Contents: 1 * Flight Wing Tail Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.