Key Features:?Portable wireless speaker， Dual 3W drivers and bass port - outclassing other similar-sized portable speakers， good for watching movies and shows?Support Bluetooth， AUX IN， and TF Card Modes. With NFC， Can be paired with NFC enabled devices?Fashionable and Durable Touch Button on the top with LED light， you can play it in a dark room?Rechargeable for up to 4.5 hours of wireless play in Max volume. Support wireless play when Charging?Smart Music 1+1 technology， Master and Slave pairing (between two Smart Music 1+1 speakers， 4 colors available: Black， Red， Blue and Silver)， you will get 3D stereo sound.Specifications:?Support NFC . ?Bluetooth Version:V4.0+EDR Class 2?Working Range:Up to 10 metes ?Dimension:131mm*80mm*65mm ?Net Weight:385g?Speaker:2*40mm?Loudspeaker Output:2*3W?Frequency Response:280HZ-16KHz?Signal-to-Noise:??95dB?Distortion: ??0.5%?Battery Voltage/Capacity:1200MAH?Battery Charging Voltage:5V??0.5V?Battery Charge Time: 4hours?play time values for speakers :6hours?Standby time:200 hours?Two speakers play is one that is left channel， and the other is the right channel??3D stereoPackage included:?NFC Bluetooth Speaker?USB Charging Cable?AUX Line-in Cable?User Manual