REMAX Wireless Bluetooth Speaker with AUX RB‎-M7Bluetooth Speaker RB‎-M7 Emotion‎- moving‎,‎ heart‎-moving the sound that will move youFreedom imported Bluetooth version 4.1 smart wireless Bluetooth connection 10 meters stable and a longer transmission distance will let the music move you enjoy unlimited freedomNon‎-destructive luxury non‎- destructive Bluetooth access 2.0 channel stereo perfect sound quality three color balance and excellent resolutionCollision aircraft – grade aluminum panels with wove anodized polished 12 channels fully made of textured metal fuselage triangular shape highlighting the sense of stereo vision‎.‎Technical SpecificationCabinet Material‎:‎ MetalLoudspeaker Accommodation Mode‎:‎ ButtonChannels‎:‎ 6 ‎(‎5.1‎)‎Use‎:‎ Portable Audio Player‎,‎ Home Theater‎,‎Mobile Phone‎,‎ Karaoke Player‎,‎Stage‎,‎ComputerSpecial Feature‎:‎ Wireless‎,‎ PortableAudio Classification‎:‎ CombinationSpeaker Type‎:‎ Sub wooferInterface Type‎:‎ USBBluetooth version‎:‎ Bluetooth 4.1Audio File Format‎:‎ MP3‎,‎WAV‎,‎WMASupports‎:‎ Bluetooth‎,‎ Volume ControlMaximum current sound‎:‎ 3MVDegree of separation‎:‎ 60dBChannel balance ratio‎:‎ + 1dBInterface‎:‎ 3.5mm Audio‎,‎ Power Charge PortAudio Source‎:‎ Bluetooth Enabled Devices‎,‎ Electronic Products with 3.5mm PlugStandby time‎:‎ 100hrsPlayback Time‎:‎ 8 HoursCharging time‎:‎ 4hrsLasting Time‎:‎ MAX‎.‎ volume 6hrsBattery‎:‎ 3.7V‎,‎ 2200mAh‎,‎ 18650 lithium batteryCompatible with‎:‎ Laptop‎,‎ Mobile phone‎,‎ MP3‎,‎ PC‎,‎ Tablet PCTransmission Distance‎:‎ W/O obstacles 10mFrequency Range ‎:‎ 100Hz‎-20KHzSpeaker Impedance‎:‎ 4 Ω 5W*2Power Output‎:‎ 5W x 2S/N‎:‎ 80dBDistortion‎:‎ 5%Charging Voltage‎:‎ 5VWorking Voltage‎:‎ 5VPackage weight‎:‎ 1.007 kg