... , connect your MP3, MP4, CD, DVD, iPod, iPhone, PSP, mobile phones, computer. 5. Metal, circular design, button curved design, a variety of ... modern style, make you own way. 6. Lithium battery, the computer USB, power adapter DC-5V, many ways you can enjoy ... 150-1800Hz(±3dB) SNR ≥80dB speaker unit 45mm product size 50*50mmWeight 80g