REMAX bluetooth speaker - Retro Mini With 2.1 channel radio function

Within 12 hours of submitting the order, please leave a message to us to note the color If there is no note, we will send it in red style Type: Bluetooth speaker Connection method: link Bluetooth Interface type: USB Battery capacity mah: 500 Frequency response range: 60-15Khz Output power: 3 w Signal to noise ratio: 70db Power supply mode: built-in lithium battery Channel: 1 Playing time: 1 hour Bluetooth protocol: 5 Number of speakers: 1 Effective distance: 10 meters Function: None Working mode: button Display: None Play format: MP3 Shell material: plastic Support format: TF card Speaker adjustment method: button Is there a radio function: None Box material: plastic Appearance size: 60*48*30mm Product weight: 0.1 (KG) Packing list: Speaker manual charging cable packaging box Power supply mode: USB