Portable Bluetooth speaker with backlight E 304B The mobile speaker E 304B with bluetooth is the "guide" to the magical world of music! With it you never get bored, because you can take it everywhere with you. Despite its small size, it differs quite a powerful and high-quality sound. This model is very practical and convenient to use, does not take up much space and can be easily taken with you and the LED backlight will brighten up the security. This mini audio player can be connected to a computer, laptop, iPod, iPhone, mobile phone and enjoy the surround sound of MP3 /MP4 files . The column supports TF card, Micro SD, USB flash drive. Mobile column E 304B with bluetooth has a built-in battery which is enough for 5 hours of continuous operation. The portable column is made in a plastic case, quality assembly. In the column there is an input under a usual USB flash drive, as it is possible to insert a flash drive of standard MicroSD. The speaker with the microphone has a separate low-frequency speaker, it has huge capabilities that will leave little people indifferent. The ability to answer calls with a microphone on this speaker. The sound is very decent for a column of this size. The sound is very loud and high-quality, it is not necessary to count on very deep basses, but this column can not be called a pshchak. Connectors: USB input (standard) Input for a microSD memory card Charger input Buttons for controlling sound, switching songs Microphone LED indicator and backlight Characteristics: Bluetooth: V3.0 Bluetooth coverage: up to 10m Working time: up to 5 hours Size: 125mm * 90mm Weight: 235g Loudspeaker: 60mm Loudspeaker: 45mm Frequency range: 90Hz-20KHz Power: 3W Signal to Noise: 60dB Distortion: 0.5% Voltage: 5V ± 0.5V Charging time: 2 hours Compatible: A2DP, AVRCP, headphones, handsfree profile Material: plastic, metal