Budget Bluetooth® Earbuds in Carabiner Case. Lightweight Bluetooth® earbuds with an internal rechargeable battery that provides up to 2.5 hours of nonstop music at max volume. The power output of the earbuds is 20mW. The earbuds feature a built in music control and microphone. The hard plastic case is to protect the earbuds and features a carabiner to attach it anywhere you prefer. Includes a Micro USB charging cable. Bluetooth® working range is 10Ms. Size of case (5 x 2.9 x 7cm). Charging time is 1.5 hours. ABS Plastic.