We recently picked up the AUKEY SoundTank Wireless Speaker (SK-M12) to review currently this speaker has been amazing the battery life on it has lasted us up to around 22 hours of listening time. The other key features it has is an Audio Input, which will allow you to listen to your non-Bluetooth devices through it.
We also noticed that it has a mode select button, which allows you to shuffle through the different modes on the speaker that will get you more base and different effects.
This product ranges for around $59.99 on amazon.ca, which is a pretty decent price for a Bluetooth speaker the sound quality, is amazing for the price compared to other more expensive Bluetooth speakers as well as it is water resistant and has drop protection as well.
Other features this speaker includes a tripod mounting screw to hold the speaker on a mini tripod or mounting it to a bicycle or other items but you have to purchase that item separately (Tripod)