Key Features This fantastic wireless Bluetooth speaker supports the advanced NFC technology which enables you to seamlessly pair your Smartphone to tablet PC with NFC speakers and headphones and play music instantly with a touch of a button. It also supports an external TF card up to 32GB. Supports Bluetooth wireless playing and NFC quick pairing. Built-in Microphone, supports hands-free calls. Built-in FM module and supports auto channel scan and storing channels. Supports voice prompt function. Supports TF card reader and 3.5 mm AUX in. Built-in high capacity rechargeable lithium battery. Audio Formats : MP3, MGP, WMA, WAV, APE. Operating Range : Up to 10 m. Battery : Built-in 800mAh rechargeable lithium battery. Specifications Type Speakers Connection Wireless Features Bluetooth, Volume Control, MP3, Microphone Color Red, Blue, Black Design Metal Input (mm) 3.5 Cable Length (cm) 85cm Wireless Range (m) 10m Frequency Response (Hz) 280-16KHZ Sensitivity (dB) 95db Impedance (Ohm) 4 Ohm Dimensions (cm) 9.3x8.7x8.5cm Weight (kg) 0.0435 Package Contents 1*Bluetooth 3.0 Wireless Speaker , 1 * usb charging cable