Description: prayer accessories MP3 speaker with headphones. More and low-power consumption. speaker for study. Made of high quality ABS material, durable to use. Great Deasign, Mini, Portable and easy to bring. Specification: Color: Blue Input interface: USB Battery type: 3pcs A battery (Not Include) Size: 17x3x30cm Frequency response range: 40Hz-20KHz Signal to noise ratio: >75 db Running time :24h Package Includes: 1x Speaker 1x Headphones 1x User Manual Note: Conversion: =2.54cm, 1cm=0.393inch Please allow slightly 0-1cm difference due to manual measurement. Colors can appear different depending on light and how the listing is viewed. Thanks for your understanding and attention. Wish you a pleasant shopping experience!