Beats Powerbeats Pro 2 - Quick Sand

**Built for Athletes** After relentless testing and refinements, the next-generation Powerbeats Pro 2 are ready for action. And they’re the most advanced product we’ve ever developed. **Tried and tested. And tested again.** In search of the perfect fit, we conducted over 1,500 hours of rigorous testing with nearly 1,000 athletes. The result: Powerbeats Pro 2 are our best-fitting headphones – ever. **Heart-rate monitoring for workouts.** You want real-time data about your workout performance, so we built Powerbeats Pro 2 with accurate heart-rate monitoring sensors. Precision-crafted LED optical sensors pulse light over 100 times per second to measure your blood flow. All this can be relayed to your favourite fitness apps in real time – and of course you can turn heart rate monitoring off whenever you want. **Stays locked in.** The updated ear hook has been rebuilt with a super-light nickel-titanium alloy that is renowned in material ... - Manufacturers part number: MX733ZMA