Products

🔧 Quick Installation & One-Handed Operation Install or remove the phone holder in seconds—no tools required. Easily mount or remove your phone with one hand, whether you’re riding or at a standstill. Stay focused, ride safe.🛡️ Secure Grip for Bumpy Roads Grandpitstop Cool Grip B4 Mobile Holder designed to grip all four corners of your phone firmly. The heavy-duty clamp ensures stability and prevents shaking, slipping, or falling—even on the

24 HOURS MONITORING – This monitor allows you to record your condition for 24 hours constantlyPRO AI ANALYSIS – The AI analysis support to identify 16 categories, and the AI database contains 50 million accurately labeled data fragments from 300,000 usersCOMFORTABLE WEARING – Using a chest strap or attaching the device directly, fit your body seamlessly, which will not make it encumbrance on youEASY TO USE – Just put it