These wireless headphones boast great sound with 70 hours of battery life — oh, and they're only $20 during Amazon's Big Spring Sale

Acer OHR205 are on sale at a discount, acer OHR205 headphones are discounted during Amazon's Big Spring Sale.

Price is $20 during the sale, the sale reduces the price to $20 for a limited time.

Discount is 44% off, the listed discount during the event is 44% off.

Drivers measure 40mm, the headphones use 40mm drivers.

Battery life lasts up to 70 hours on a single charge, a single charge provides up to 70 hours of playback.