Released in 1984, Koss’s Porta Pro was an instant hit for its portable, on-ear design and warm, smooth, detailed sound—and it’s still considered one of the best values in entry-level headphones to this day. Now, the Porta Pro Wireless takes the much-loved sound of the original and adds wireless Bluetooth compatibility. Featuring Bluetooth 4.1 with aptX and a battery rated to last more than 12 hours, it makes an ideal travel headphone even better suited for the task. Like its predecessor, this model folds in several configurations and locks for secure, compact carry in the included hard case. The adjustable temporal pads relieve pressure on the ears to keep you comfortable, while its lightweight, open-air cushions allow you to stay aware of your surroundings without affecting sound quality.