Diamond Buds

All-new True Wireless Active Noise Cancelling Earbuds

COSTAR Diamond On T300 True Wireless Earbuds

New Release

StarPlay EQ™

Music has a widely range of different sounds, each belonging to a certain frequency. Therefore, Costar team has built a special team, include professional music ...

The Future We Imagine Is the Future We Get

Costar Cosmos Club

Join CostarClub to meet more dreamers, Let's shape the future together !

Noise Cancellation TWS !

Best In The Market | Costar Diamond

Diamond ANC earbuds

Public Review / Testing in Train

TWS VS Neckband

Which One is Better?

Journey with COSTAR

I traveled 600 KILOMETERS to Test these ANC earbuds!