Productech via Walmart offers the Treblab N8 Wireless Bluetooth Headband Earbuds for Black for $19.97 with free shipping. That's the lowest price we could find by $9. They feature:
20Hz to 20kHz frequency response
waterproof and sweatproof design
8-hour battery life
Bluetooth 4.0 with 33-foot range
You very likely are putting your laptop battery into an early grave.