You can use a single earbud on its own, just like a headset.
Brad's Deals Editor Michael,
The JLab Audio Go Air Wireless Earbuds drop from $29.99 to $24.99 with free shipping at the Microsoft Store. This is the best price we found for a pair by $5. Their batteries will last for up to five hours with continuous usage, and their case provides an additional 20 hours worth of recharges. They also have touch controls and a dual-connect feature, so each earbud can be used independently. Sales tax is charged in most states.