To purchase a one-year ARC Pro subscription, you can follow these steps:

1. Visit the Synthiam Website: Go to the Synthiam website at synthiam.com.

2. Navigate to the Product Page: Look for the ARC Product page under Products, and choose the subscription section on the website. This is usually found in the main menu or footer.

3. Select ARC Pro Subscription: Choose the ARC Pro subscription option. You should see details about the features and benefits of the Pro subscription.

4. Create an Account or Log In: If you don't already have an account, you may need to create one. If you have an account, log in to proceed with the purchase.

5. Enter Payment Information: Provide your payment details to complete the purchase. Ensure that your payment method is accepted.

6. Confirm Purchase: Review your order and confirm the purchase. You should receive a confirmation email with details about your subscription.

7. Install ARC Pro: Install ARC Pro to take advantage of the Pro subscription.

If you encounter any issues during the purchase process, you can contact Synthiam's support for assistance. They can provide guidance and help resolve any problems you might face.

Once you have your ARC Pro subscription, you can use it with your EZ-Robot InMoov Robot Head Kit to unlock advanced features and capabilities in ARC. If you have any more questions or need further assistance, feel free to ask!