UGREEN WS211 HiTune EchoBuds Magic Earbuds

Design & Portability

The UGREEN CM403 Bluetooth 5.0 Transmitter & Receiver features a sleek, lightweight design that makes it incredibly portable and easy to carry anywhere. Its compact form factor allows it to fit effortlessly into your pocket, laptop bag, or travel kit, making it perfect for use at home, in the office, or on the go.

Constructed from durable ABS materials, the device is built for everyday use while maintaining a modern and minimal appearance. The simple interface ensures anyone can operate it without technical knowledge. With a single switch, users can quickly toggle between transmitter and receiver modes, making it highly convenient for multiple audio setups.

Its 3.5mm AUX compatibility ensures it works with most traditional audio equipment, allowing you to modernize older devices without replacing them. For users who value convenience and portability, the UGREEN CM403 offers a practical and elegant wireless audio solution.

Bluetooth 5.0 Performance & Connectivity

One of the standout features of the UGREEN CM403 Bluetooth 5.0 Transmitter & Receiver is its advanced Bluetooth 5.0 technology. Compared to previous Bluetooth versions, it provides faster data transmission, lower latency, and more stable connections, resulting in a smoother audio streaming experience.

With a wireless range of up to 10 meters, you can move freely around your room without worrying about signal drops or interruptions. This makes it perfect for watching TV with wireless headphones, streaming music from your smartphone, or connecting your laptop to Bluetooth speakers.

Bluetooth 5.0 also improves energy efficiency, helping extend the battery life of the device. The result is clear, uninterrupted audio performance whether you’re enjoying music, movies, podcasts, or gaming.

Dual Transmitter & Receiver Functionality

The 2-in-1 TX/RX capability makes the UGREEN CM403 extremely versatile. In Transmitter (TX) mode, it sends audio from non-Bluetooth devices such as TVs, desktop computers, or gaming consoles to Bluetooth headphones or speakers.

In Receiver (RX) mode, it does the opposite—allowing wired speakers, car stereos, or home audio systems to receive wireless audio from smartphones, tablets, or laptops.

This dual functionality eliminates the need for multiple adapters and simplifies your audio setup. It effectively transforms any standard device into a Bluetooth-enabled entertainment system, giving users greater flexibility and convenience in how they connect and enjoy their audio.

Battery Life & Power Efficiency

The UGREEN CM403 Bluetooth 5.0 Transmitter & Receiver includes a built-in 140mAh rechargeable battery designed for extended listening sessions. A single charge provides up to 8 hours of continuous audio streaming, making it suitable for long movie nights, workdays, or travel.

Charging the device is quick and easy using the Micro USB port, with a full recharge taking approximately two hours. The efficient Bluetooth chipset also helps reduce power consumption while maintaining strong wireless performance.

This balance between battery capacity and energy efficiency ensures users can rely on the adapter throughout the day without constant recharging. For those who need dependable wireless audio on the move, the CM403 offers reliable and long-lasting performance.

Universal Compatibility & Everyday Use

Another major advantage of the UGREEN CM403 Bluetooth 5.0 Transmitter & Receiver is its broad compatibility. Thanks to its 3.5mm AUX interface, it works seamlessly with a wide range of devices including televisions, laptops, PCs, car stereos, wired headphones, and speakers.

This makes it an excellent solution for upgrading older audio systems that lack built-in Bluetooth functionality. Instead of replacing expensive equipment, users can simply plug in the adapter and enjoy modern wireless audio capabilities instantly.

Whether you’re streaming music in the car, watching late-night movies with wireless headphones, or connecting your phone to a home speaker system, the CM403 provides simple, reliable, and high-quality Bluetooth audio connectivity for everyday use.