Groove Air Neckband is made for people who want non-stop 35 Hours Playback Time  great-sounding music with 10 mm Bass Drivers just the right mix of deep bass. Key Features: Battery Life: Up to 35 hours of playtime on a single charge. Sound Quality: Equipped with 10mm drivers for clear audio. Bluetooth Version: Utilizes Bluetooth 5.2 for stable connectivity. Design: In-ear design with a behind-the-neck form factor, available in multiple colors.