The UGREEN Bluetooth 5.3 Transmitter Receiver BT503 has been designed to deliver stable wireless audio performance for TVs, cars, headphones, speakers, and home stereo systems. Equipped with advanced Bluetooth 5.3 technology and aptX HD support, studio-quality sound can be experienced with enhanced clarity, reduced distortion, and improved synchronization. Audio transmission has been optimized for movies, gaming, music streaming, and hands-free communication, making this wireless adapter suitable for both entertainment and daily use.
A convenient 2-in-1 transmitter and receiver function has been integrated to expand compatibility with non-Bluetooth devices. In transmitter mode, Bluetooth connectivity can be added to TVs, PCs, gym equipment, and airplane entertainment systems. In receiver mode, wireless audio can be streamed directly to car stereos, wired speakers, and home audio systems. A smart display screen has also been included to provide real-time information about connection status, battery level, paired devices, and volume settings for simplified operation.
Long-lasting battery performance has been engineered for uninterrupted use throughout the day. Up to 32 hours of operating time can be achieved on a single charge, allowing extended listening sessions during travel, work, or home entertainment. Dual-device connectivity support enables seamless switching between connected devices, while aptX Low Latency technology helps reduce audio delay for a more synchronized viewing and gaming experience.
Key Features
Bluetooth 5.3 Technology
A faster and more stable wireless connection has been provided through Bluetooth 5.3 technology. Reliable audio transmission can be maintained with reduced interference and improved efficiency across compatible devices.
aptX HD & aptX Low Latency Support
High-definition wireless sound quality has been supported with aptX HD codec technology. Audio delay has also been minimized through aptX Low Latency support, making video playback and gaming more immersive and synchronized.
2-in-1 Transmitter & Receiver Function
Both transmitter (TX) and receiver (RX) modes have been integrated into a single compact device. Non-Bluetooth TVs, PCs, and entertainment systems can be converted into Bluetooth transmitters, while wired speakers and car stereos can receive wireless audio streaming.
Smart Visual Display
A built-in display screen has been added for clear monitoring of connection mode, paired devices, battery status, and volume levels. Device operation can therefore be managed quickly and efficiently.
Wide Compatibility
Universal compatibility has been provided for TVs, headphones, AirPods Pro/Max, car stereos, speakers, laptops, tablets, and smartphones. Seamless wireless connectivity can be enjoyed across home, office, and travel environments.
Long Battery Life
Up to 32 hours of continuous operation can be achieved on a full charge. The device can therefore support extended entertainment sessions, flights, commuting, and daily use without frequent charging interruptions.
Hands-Free Calling
A built-in microphone has been included for clear hands-free phone calls. Calls and music playback can easily be managed while driving, working, or multitasking.
Specifications
- Product Name: UGREEN Bluetooth 5.3 Transmitter Receiver
- Model: BT503
- Product Code: 45492
- Bluetooth Version: Bluetooth 5.3
- Audio Port: 3.5mm
- Charging Port: USB-C
- Frequency Band: 2400MHz–2483.5MHz
- Frequency Response: 20Hz–20KHz
- THD+N: ≤0.1%
- Max. RF Output Power: 4dBm (EIRP)
- Transmission Distance: Up to 10m / 33ft (without obstacles)
- Bluetooth Profiles: A2DP / AVRCP / HSP / HFP
- Battery Type: Polymer Lithium-Ion Battery
- Battery Capacity: 300mAh 3.7V (1.11Wh)
- Charging Time: About 2 Hours
- Operating Time: About 32 Hours
- Limited Charging Voltage: 5.25V
- Output Level (Receiving): ≤630mVrms RL=100kg
- Input Level (Transmitting): ≤0.75Vrms
Supported Codecs
- RX Mode: SBC / AAC / aptX / aptX HD
- TX Mode: SBC / aptX / aptX HD / aptX Adaptive
Compatibility
- TVs
- PCs & Laptops
- Car Stereos
- Wired Speakers
- Home Stereo Systems
- Headphones
- AirPods Pro / AirPods Max
- Smartphones & Tablets
Conclusion
The UGREEN BT503 Bluetooth 5.3 Transmitter Receiver has been developed to provide versatile wireless audio connectivity with high-definition sound performance and dependable battery life. With aptX HD support, low latency transmission, dual TX/RX functionality, and broad device compatibility, reliable audio streaming can be achieved for TVs, vehicles, headphones, and home entertainment systems. Its compact design, smart display interface, and long operating time make it a practical solution for everyday wireless audio needs.
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