Bluetooth 5.3: This indicates the version of Bluetooth technology used, offering improved connectivity range, speed, and possibly other features over previous versions like Bluetooth 5.0 or 5.1.
Upgraded sound quality: Likely refers to improvements in audio fidelity, clarity, or bass response compared to earlier models.
Ambient light: Could mean the device features integrated lighting, which might be decorative or functional (like indicating device status).
4H+ playing time: Indicates the battery life of over 4 hours of continuous playback, which is quite decent for portable devices.
Noise reduction calls: Implies the device has noise reduction technology for clearer phone calls or communication.
Lanyard design: Suggests the device has a built-in lanyard or attachment point, making it easy to carry or hang.
Line in SD card mode: Likely means the device supports auxiliary input via a physical line-in connection and also has the ability to play music from an SD card.
