usic play Support micro sd card music play Support hand free call function Built in 500mah rechargeable polymer battery, working for 3-5houra 16 core Double magnetic speaker Frequency response: 20hz-20khz Material: abs +plastic Loud speakeroutput: 4¦¸3w, 40mm dia S/n: ¡ý85¡à2db Suction cup under the speaker Easy operation with voice prompts Unique design with good sound quality Accessory: charge cable New model coming soon