The Keeka BH-S521 are wireless on-ear headphones designed with a playful aesthetic, featuring decorative horns on the headband and a vibrant blue finish. They connect via Bluetooth with an operating range of 10 meters, though you can also use the 3.5 mm mini jack for a wired connection when you prefer not to rely on a battery. An integrated microphone allows for hands-free calls, supported by a microphone sensitivity of -42 dB. Technically, these headphones offer a frequency response from 20 Hz to 20,000 Hz, an impedance of 32 Ohm, and a sensitivity of 102 dB. The design focuses on comfort with white padding on both the ear pads and the headband. With a playback time of 6 hours, these blue headphones are suitable for users who want a fun, expressive look for their daily audio listening.