Wireless Speaker w/Clock Displaying Function

This Wireless speaker supports phone/laptop/tablet PC and TF card(mini micro card). Wireless + EDR. Working range of this wireless speaker is up to 10 meters. Powerful high-quality stereo sound, hands free call and echo cancellation are this Wireless speaker's features. Lithium battery 300mAh, 2 hours. Voice box power input: DC(5V 500-1000mA). Loudspeaker power output: 3w S/N ratio: more than 85dB. wireless speaker frequency response: 120Hz-20KHz. 2 3/4" L x 2 3/8" W x 2 3/8" H