Best Beats Prime Day deal: Save $100 on Beats Solo 4

Beats Solo 4 Hits Its Black Friday All-Time Low Again, 50% Off With 50-Hour Battery

Beats Solo 4 returned to its $99 all-time low (50% off the $199 list price) on Amazon. 50-hour battery—double most competitors—plus Spatial Audio and 217-gram ergonomic design justify the price for all-day work without fatigue.