The Fineblue K55 single retraceable earbud is a Bluetooth 5.2 in-ear headset designed for one-ear use during activity and calls. It combines a retractable cable and clothing clip so the earpiece stays accessible while leaving the other ear open to ambient sound.
Use cases include running, cycling, commuting, delivery or any task where situational awareness and hands-free calling matter. Dual-device pairing and a vibrating call alert help you manage calls without pulling out your phone.
-
Wireless connectivity: Bluetooth 5.2, up to 10 m range and dual-device pairing for easy switching.
-
Notifications: Discreet vibrating incoming-call alert for noisy environments.
-
Battery life: Up to 20 hours playtime, ~180 hours standby, on-device battery status display.
-
Design: Lightweight single in-ear unit with retractable cable and clip for secure attachment.
-
Practical control: On-device controls for calls and playback without using your phone.
Light specifications: single earpiece; retractable cable; wireless BT 5.2.
Fit: Fits most ear sizes as a single in-ear unit and clips to clothing for stable wear during activity.
