Beats Flex vs. Powerbeats Pro 2: Surprising Battery Life for Fitness When it comes to fitness, earbuds aren't just about sound-they're about endurance. Take a stroll through Beats' lineup, and you'll find a spectrum of options, each promising to fuel your workout with its own unique blend of tech and design. The Beats Flex and Powerbeats Pro 2 stand out in this arena, but their battery lives reveal a nuanced story. The Beats Flex, with its sleek, magnetic design and 12-hour battery (plus a charging case), leans into portability, making it ideal for quick sessions or on-the-go commutes. Yet, its compact size comes with trade-offs, as its battery capacity pales in comparison to the Powerbeats Pro 2's jaw-dropping 45 hours of playback when paired with its included case. That's a full day of workouts-or more-without needing a recharge. But here's the twist: while the Pro 2's battery life is impressive, its focus on noise cancellation, heart rate monitoring, and IPX4 water resistance makes it a powerhouse for outdoor runs or high-intensity training. Meanwhile, the Beats Solo 4 and Studio Pro (with 50 and 40 hours, respectively) cater to longer listening sessions, but their over-ear designs might not suit every activity. The Studio3 Wireless, with 22 hours, strikes a balance for casual use, but fitness enthusiasts may find its spatial audio and lossless capabilities more for music than movement. So, when the goal is stamina, the Powerbeats Pro 2's extended battery is a game-changer-yet the Flex's compact form factor remains a contender for those prioritizing convenience over duration. Ultimately, the choice hinges on your priorities: the Flex offers a seamless, pocket-friendly experience, while the Pro 2 surprises with its unyielding power. For relentless workouts, the latter might just be the unsung hero of the Beats family.