Rechargeable Wireless Bluetooth V2.0 Music Speaker Player with TF Slot - Black

Pros: According to the speaker size it is pretty loud, which is good. It includes the basic features such as volume control and it gives the sound out in the wire while in bluetooth mode. And naturally works with the wire if the music device does not have bluetooth. Can be recharged while listening music in bluetooth mode.

Cons: It is pretty expensive I guess. Listening the sound similarly with another speaker through wire requires 3.5mm female-female adapter which is n ot included in the package.

Other: I think this will be useful while hanging outside.

Pros: 1) Small, good to transport (can be placed in pocket); 2) The sound is loud; 3) Bluetooth allow you to play and control the sound at distance (~10m); 4) Has a good price; 5) Has rechargeable batteries; 6) Can be used with non-bluetooth devices when using cable.

Cons: The controls could be better built.

Other: I recommend for birding playback!