Bose SoundLink Bluetooth Wireless Speaker - Leather (Old Version) Full-range sound from a small Bluetooth speaker, thanks to proprietary Bose technologies. Bluetooth technology enables high-quality, wireless stereo performance from your smartphone or other source to the SoundLink Speaker. Compact size lets you take the speaker anywhere; it's small and lightweight enough to carry in one hand or place in a backpack or travel bag. Rechargeable lithium-ion battery delivers more power and longer playing time - than other rechargeable batteries - up to 8 hours. Integrated leather cover protects the speaker and unfolds into a stand for instant playing anywhere.