We are offering promotional bluetooth wireless speaker, the bluetooth wireless speaker which can be used as listening audio, along with great amount of features for your customers that includes sd card support, compatible with mobile, computer, mp3, mp4, micro tf, multi color led indicator light, usb input, play, pause, rewind, forward stop buttons, 280hz-16khz frequency, usb cable, bluetooth 2.0, 3.5 mm audio jack, fm radio, bright led light, thereby provides huge awareness of your brand in the market. product details product size: 6.3 x 6.3 x 7.5 cm imprint size: 3 x 2 x 0 cm(can be reduce or increase) imprint method: screen printing packing method: box packing product features: sd card support, compatible with mobile, computer, mp3, mp4, micro tf, multi color led indicator light, usb input, play, pause, rewind, forward stop buttons, 280hz-16khz frequency, usb cable, bluetooth 2.0, 3.5 mm audio jack, fm radio, bright led light.