[2021 Upgraded] True Wireless Earbuds, TANGMAI W0 Bluetooth 5.0 Headphones with Microphones, 30H Playtime, Deep Bass…

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[Free Listening, Freely Listening] – TANGMAI W0 wireless earbuds built-in a Bluetooth 5.0 chipsets, brings you true freely listening anywhere and anytime. We offer a 90-Day Unconditional Money-Back Guarantee which means you can get a free listening experience for 90 days.
[Immersive Stereo Bass] – Based on the research of frog vocal vesicle, we developed the Vocal-Sac acoustic technology and built a resonant cavity in TANGMAI W0, when the vibrations of the diaphragm drivers emit a sound, which resonates on the elastic membrane of the vocal sac. The resonance causes the soundstage to be amplified more than 48%, gives you more music detail and stereo.