... mask design Pumpkin mask shape USB recharging mp3 protable mini speaker with FT card 1.Modeling unique, delicate novel, stream line ... .Using the world's advanced technology, low-voltage, low-power amplifier IC7.Power supply:USB power, Build-in Li-battery, longer ... ,etc., Main SPEC:1.Loudspeaker Output: 2W 40mm/4Ω,Antimagnetic speaker unit2.Frequency response: 100hz-20Khz3.Signal to noise: ≥80db4.THD ...