Spiker Feature Bluetooth Speaker Types: Smart Bluetooth Speaker Rated power RMS: 50 Watts Bluetooth Compatiblity: Bluetooth version 4.1 Loudspeaker: Yes TF Card Port: Yes Aux Port: Yes FM Radio Function: Yes Battery power: 7 hours Remax Song K outdoor Pull Rod Bluetooth Speaker RB-X5 Material: ABS+Iron net Bluetooth version: 3.0 Signal noise ratio: ≧71dB Transmission distance: 10m 2 Microphone interfaces 2 Guitar interfaces Standby time:up to 30 hours Playing time:up to 7 hours Charging voltage: DC15V Rated power:50w Colorful light effect, LED display, built-in controller Professional Karaoke system 6 levels of the knob controls the speaker's volume wireless microphone Built-in recorder High quality 10 inches bass unit Built-in aluminum alloy rod Support AUX and Bluetooth player with USB Flash or MP3 High quality of 6.5 inch woofer, strong and powerful bass