The Unitree A2 is a 12 degree‑of‑freedom legged industrial quadruped designed for stability, payload handling and operation on uneven terrain. The Unitree A2‑W integrates powered wheels in place of its feet, allowing it to roll efficiently on flat surfaces while still being able to walk using legs when needed. The A2‑W is better suited for long‑distance travel, higher speed on smooth ground and improved energy efficiency, whereas the standard A2 is optimized for rough terrain where wheels offer limited benefit.
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