Very good sounding little speaker with only one purpose: to play audio through bluetooth. It has no aux input or TF slot, simply one button and micro-usb charging port, both located on the bottom of the unit. Great for bedroom, bath, computer room, etc. Metal construction and well built.
Note: I would not use carry this speaker in my pocket or purse because there is no speaker grill protecting the speaker itself. I would worry that the exposed speaker would be damaged by other items in the purse or pocket. Also, by placing the charging port on the bottom instead of the back of the unit, you cannot place it flat on a surfaace while being charged.