Soundmatters foxLv2 Purist Pocket-sized Portable Audiophile Speaker System, Black, Non-Bluetooth Second generation version of the first and still only pocket-sized portable stereo speaker good enough for an audio purist. True purist hi-fi go-anywhere speaker alternative to earphoneshigh-resolution Built-in Lithium-Ion battery amazingly is also a bass woofer (patented) Connections include: standard 3.5 mm headphone-type connector audio-in, 3.5mm Subwoofer Output. Includes: English/French language instructions, AC adapter with 4 plug-in adapters (US/Japan, Europe/China