RETEKESS TR617B bluetooth Wireless DSP Microphone for Live Broadcast Built-in Speaker Music Player Mic for Karaoke KTV M

Features Integrated audio microphone wireless connectionAfter many sound quality adjustments the product has more attractive sound qualityHigh quality music playback Bluetooth connection up to 20 metersCustom FM output frequency one touch connection to FM band amplifier4000mAh rechargeable battery can be used for a long time without frequent battery replacementPower 20WWorking voltage 6 8 to 8 4 VWorking current 350mACharging current 950mAStandby current 75uAStandby time 3 monthsUse range 20MBattery capacity 2000mAh 2Bluetooth V4 1FM 87 5 108MHzMaterial ABSSize 62 x 280mmWeight 330g Package Included 1 x bluetooth Microphone2 x Batteries1 x Charging Cable1 x User Manual