SincereetaliType?: Bluetooth Speaker Connection Method?: Bluetooth Connection Interface Type?: USB Frequency Response Range?: 60Hz-15KHz Output Power?: 5w Signal to noise ratio?: 70db Power supply mode?: built-in lithium battery Sound track?: 5.1 Playing time?: 8 hours Extended storage?: not supported Bluetooth protocol?: 5.0 Number of speakers?: 1 Effective distance?: 15 meters Operation method?: button Applicable crowd?: General display: None Playback format?: MP3 Shell material?: plastic APP compatibility?: Yes Supported format?: Bluetooth format Speaker adjustment method?: button Is there a radio function?: None Box material?: plastic Appearance size?: 70*70*52mm Product weight?: 0.2 (KG) Power source?: USB Waterproof rating?: not waterproof Built-in battery capacity?: 1000mA-1200mA Battery capacity?: 1000mA-1200mA battery?: