Wireless Charging Phone Holder Mini Subwoofer Bluetooth Speaker

Product information: Battery capacity: 3600mah Frequency response range: 100HZ-20KHZ Output power: 10w Signal to noise ratio: ≥75dB Power supply mode: built-in lithium battery Channel: 2 Play time: 8 hours Expansion storage: 16GB Bluetooth protocol: 4.1 Number of speakers: 2 Effective distance: 10 meters Function: insert card, dustproof, voice prompt, call function Operation mode: button Play format: MP3, WMA, WAV Shell material: plastic