High sound quality, high volume, direct plug-in speaker, mobile phone/tablet/notebook/desktop. AUX dedicated plug, shocking listing. Finally, the Android AUX mobile phone interface can be plugged in to listen to songs without any adapter cable. Simple and convenient one-plug and listen, no need for cumbersome connection, one-plug and sound. Amplify the volume several times, you can hear it no matter how far away, high volume + high sound quality = audio-visual enjoyment. When answering the phone, the sound is louder. Are you afraid that your parents can't hear the phone clearly? Arrange! You can also use it on a laptop, and you don't have to worry about the low sound when watching TV series and listening to music. Speaker power supply: 3.7V 300MAH Charging voltage: DC5V250MA Output power: 3W Output impedance: 40HM Frequency response: 50-1800H2 Signal-to-noise ratio: Less than 80DB +N Less than 0.3% Speaker size: 14 inches Product size 41 x 41 x 33MM Color: Black Material: plastic Package Contents: 1 * Speaker Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.