- Apple Vision Pro headset, priced at $3,500, facing customer backlash.

- Complaints include eye strain, headaches, and motion sickness.

- Over 200,000 units sold during pre-order; released to the public on Feb. 2.

- While some see it as a tech revolution, others are returning the devices to Apple Store.

- Headaches cited as a common issue, with users experiencing extreme discomfort after a short period.

- Some users reported severe headaches even within 30-45 minutes of use, leading to returns.

- Eye strain mentioned as another problem, causing discomfort and fatigue after prolonged use.

- Motion sickness reported by some users, with one advising against it for those prone to the illness.

- Apple has not yet commented on the reported issues.

 - Apple CEO Tim Cook announced the Vision Pro mixed reality headset in June.

- Described as a computer augmenting reality by blending the real and digital worlds.

- Features a glass screen with 4K resolution displays for each eye, adjustable headset, and stretchable headband.

- Weighs about 20 ounces, providing the equivalent of a 75-inch TV resolution.

- Interaction is through voice commands, eyes, and hands; no mouse or keyboard required.

- A small dial on the headset allows users to adjust the visibility of apps relative to the real world.