Ebay offers Altec Lansing HydraMotion Bluetooth Speaker for $13.99 (reg. $49.99) free shipping.

Product Description:
The HydraMotion EverythingProof Wireless Speaker is super portable and gives you big, 360 sound - anywhere! With 12 hours of battery life, the music will never end. The HydraMotion is IP67 Everything Proof - this speaker is super durable and will outlast anything thrown at it! A carabineer clip allows the speaker to be clipped or hung from your backpack, duffle bag, or outdoor awning. 11 Built-in LED light modes beat, strobe and pulse to the highs and lows of your music. Pair two HydraMotions together via True Wireless Pairing for double the sound!