Smartwatch Step Tracker with GPS

I'm looking for a fitness tracking device specifically designed for step counting that can be attached to a watch. The device should also include GPS tracking and have the ability to sync with smartphone apps.

Key Requirements:
- Primary function: Accurate step counting
- Additional feature: GPS tracking
- Sync capability: Must connect with smartphone apps

Ideal Skills and Experience:
- Experience in developing fitness tracking technology
- Knowledge of GPS integration
- Proficiency in app development for smartphone connectivity
- Background in wearable technology design