Singapore & Mumbai, India — COSTAR, an electronic consumer brand driven by technology and aesthetics, launches its new product, Diamond-On T300, the True Wireless earbuds that feature Active Noise Cancellation, Hi-Fi Stereo Sound, IPX4 water & sweat resistance, and multiple modes. It aims at users who seek True Wireless Stereo (TWS) earbuds with Active Noise Cancellation function at a reasonable price and fashion design elements.

Equipped with a 25dB Active Noise Cancellation (ANC) technology, the 4 microphones of Diamond-On T300 enable users to enjoy audio with minimum distractions, offering a crystal clear voice even in a noisy environment. “Noise during life is a big problem now, and earbuds with Active Noise Cancellation (ANC) are a solution for that.” said the Project Manager, Justin Ma. “However, the current ANC TWS earbuds are very costly. So we have engineered COSTAR Diamond earbuds to provide a 25dB Active Noise Cancellation feature at a price under USD $25, which will be very affordable to most of our customers.”

Diamond-On T300 has a unique Diamond-shaped Design. The designer team has masterfully used a linear, geometric, and symmetrical design to reveal a futuristic edge. The diamond-shaped charging case has gone through more than 300 iterations and is finally finished with a pearlescent baking process that presents 20 perfect facets. “Too many earbuds are designed very similarly to each other. I hope that our diamond-inspired design can give our customers a different feeling.” Justin further said, “Diamond means eternity, shining and precious. We hope that our customers can be a diamond in their life, dare to shine, dare to be different, and dare to accomplish their dream with effort. We hope that COSTAR can be a good partner during this journey.”

Costar Diamond


Here are some additional features of the Diamond-On T300:
- Hi-Fi Stereo Sound: The PEK Composite Diaphragm Technology and the 10mm Dynamic Bass Boost Drivers offer users a better immersive audio experience.
- IPX4 Water & Sweat Resistant: Users can enjoy their workout with music or having a call on a rainy day without worrying about sweat or rain.
- Instant Pairing Tech: Diamond-On T300 will automatically enter the Bluetooth pairing mode by opening the charging case.
- Voice Assistant: Diamond-On T300 is compatible with the Google/Siri Assistant.
- Multiple Modes: Including Active Noise Cancellation (ANC) Mode, Transparency Mode, 70ms Ultra-Low Latency Game Mode, and Standard Mode.
Full Touch Controls: Users can manage their calls and music with just a touch of Diamond-On T300.


Pricing and Availability
Diamond-On T300 will be available in India on August 5th, 2022, offering 3 colors (Dynamic Black, Smart Grey, and Elite White) at an MSRP of INR ₹1799 (USD $23). Get yours now by visiting its Amazon store.

COSTAR is an electronic consumer brand based in Singapore driven by technology, aesthetics, and imagination. To provide fashionable, valuable, and environmentally-friendly wearable smart devices, COSTAR focuses on young technology enthusiasts’ life scenarios . For more information about COSTAR and COSTAR products, please visit its official website 

PR Contact
COSTAR Marketing Team

August 05, 2022 — Felix Wu

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