KV-B1 AIR Semi-In-Ear Wireless Earphone Colorful Series

Driver Performance: Employs a standard 10mm to 13mm composite dynamic driver optimized for clear vocal reproduction and punchy bass curves. 

Acoustic Build: Uses an open, semi-in-ear chassis design that avoids sealing off your ear canal entirely, maintaining ambient awareness. 

Connectivity: Backed by a standard True Wireless chip operating on a 10-meter stable range line-of-sight.

Playback Capacity: Expect roughly 4.5 to 5.5 hours of continuous playback on a single earbud charge.

Charging Base: The pocket-sized companion charging case supplies up to 4 complete earbud recharges before needing its own USB-C plug-in.

Rapid Deployment: Uses Hall Switch technology—the earphones boot up and auto-connect to your last remembered device the exact second the case lid opens.

Single Tap: Minor step-by-step volume adjustments (typically left side lowers, right side increases).

Double Tap: Fast play and pause commands for active music tracks or video feeds.

Press & Hold: Skip tracks forward (right earbud) or revert back to previous songs (left earbud).