- Brand: other/other
- Model: NR-550
- Function: battery display
- After-sales service: other
- Origin: Mainland China
- Province: Guangdong Province
- Prefectures and cities: Shenzhen
- Channel: 2
- Bluetooth version: 5.1
- Color classification: white (standard configuration) white (high configuration)
- Package type: official standard
- Headphone category: true wireless headphones
- How to use: In-ear
- Transmission radius: 10m
- Whether single or dual ear: bilateral stereo
- Smart type: other smart
- Standby time: 4 days
- Transmission radius: 10m
- Connection between the left and right cavities of the earphone: wireless connection
- Headphone and playback device connection method: Bluetooth connection