8.3G FEATHERLIGHT 40H PLAYTIME At 8.3 g, SOUNDFREE S40 is ultra-light for all-day wear without pressure or fatigue. 10 hours per charge, 40 hours with the case. Bluetooth 5.4 for fast, stable wireless connection. ^^ TITANIUM EAR HOOKS SECURE FIT Silicone-coated titanium hooks flex to fit and stay put during running, cycling, gym, and commuting. Zero in-ear pressure no soreness, hours of comfort. ^^ 2-MIC ENC CLEAR CALLS ANYWHERE Dual-mic ENC cuts wind, traffic, and gym noise for clear calls, video meetings, and voice commands.
Hands-free connection indoors or outdoors. ^^ 1811MM DRIVER + LDX AUDIO Large-format dynamic driver for spacious, natural open-ear sound.
LYPERTEK app: EQ tuning, touch customisation, and LDX (Lypertek Definition Expander) for boosted clarity. ^^ MULTIPOINT + IP55 WATERPROOF Connect two devices at once no re-pairing needed. IP55 waterproof handles sweat, dust, and rain. Touch controls manage music, calls, and voice assistants.