• Model: SH-923
• New function:
• With digital MP3 record in USB/SD card
• 1GB record 1,000 minutes
• 64GB record 64,000 minutes
• FM radio
• Bluetooth 3.0 function
• Echo function
• independent bass and treble control knob
• In UHF dual wireless channels(Can be done single channel as you need)
• Built in one DC 12V 10Ah rechargeable battery
• DC 15V/1.5A charge
• One full range 4Ω 8" speaker
• Peak of music power: 90W watts max
• One Φ6.5 AUX  input
• One AUX output
• One speaker output
• Two wired MIC input jack