Beats Solo4 Wireless Headphones  On-Ear Wireless Headphones, in black, are $97.99 (regular price $199.99) at Walmart.com. Orders $35.00 or more ship FREE. Some features are   Personalized Spatial Audio with dynamic head tracking ,  UltraPlush on-ear cushions for comfort and noise isolation , and a lightweight ergonomic design. With  up to 50 hours of battery life  and Fast Fuel for quick charging.