1.power:3W
2.input currency:3.7V
3.frequency range:118HZ
4.built-in Li-ion battery:500mA
5.SNR:more than 80db

specification:

Output power:RMS 2W THD=10%
Frequency Response:150-18000HZ(+/-3dB)
SNR:≥70 Db
Speaker:external diameter 45mm, magnetically shielded, 4ohm
External USB cable
Build-in stereo FM radio
Product size:74.5*50*52mm
TF card special. Retractable cable to the computer. built-in lithium battery
Power can not be higher than 5.5v

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