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