Colorful Bluetooth speaker outdoor microphone audio

Applicable scenarios: outdoor, home, mobile portable, karaoke, broadcasting system, other Time of listing: 2024 Connection method: Bluetooth connection Frequency response range: 40Hz-20KHz Signal-to-noise ratio: ≥70db Number of speakers: 2 Valid distance: 10 Box material: Plastic Appearance size: 160*150*300 After-sales service: three packs of shops Article No.: HY-3317 Power supply method: USB Whether the patent source: No Waterproof grade: Not waterproof Bluetooth version: 5.0 Built-in battery capacity: 2000mAh-4000mAh (inclusive) Rated power: 10 Rated voltage: 3.7 Additional functions: card insertion, voice prompt Certification type: ce, FCC Is it built-in battery?