Speaker, Applicable for ipod, MP4 Player, Laptop, PC and More. ... Speaker: Φ36mm.3,multi-circuit protection. 3,Built-in rechargeable Li bettery.4,Built-in 3.5mm audio cable Description: 1 ... to take. Used new design of latent port. 3, Be applicable for MP3, MP4, Laptop, PC, MID, Mobile phone ... Time:2-3 HoursSuitable ambient : 0°C~40°CPlaying time :3-5 Hours Certification:CE/FCC/ROHS speaker for ipod