Bluetooth connection, strong signal, brings super bass stereo sound effect.Support TF card insert to play the music.Portable design for shoulder or handle carrying, suitable for hiking, travel, climbing, etc..Item Name: bluetooth-compatible SpeakerMaterial: Plastic ShellPower Supply: Built-in 1500mAh BatteryPlay Time: 6 HoursPlay Format: MP3Input Power: 5W Each HornHorn: 4Frequency Response Range: 100Hz - 20KHzSignal-to-Noise Ratio: Greater than 75dBExpansion Memory: 32GBBluetooth Protocol: 4.0Interface Type: USBEffective Distance: 10m/393.7" (Approx.)Support Card: TF Card (Not Included)Functions: Bluetooth, TF Card Reader, AUX Playback, FM RadioFeatures: Wireless, Portable, Heavy Bass MusicSize: 38cm x 16cm x 15cm/14.96" x 6.30" x 5.91" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:1 x bluetooth-compatible Speaker1 x Charging Cable1 x Strap1 x User Manual