Updated 10W high stereo power sound via two bluetooth speakers connected together! Clear and loud even in a noisy environment.Hook carabiner portable for riding, hiking, camping, climbing.You can conveniently pick up a call via bluetooth mode.Upgraded powerful battery for 12hrs playback.The volume of the battery is visualization on your phone.Wireless speakers adopt seamless Bluetooth 5.0. Support TF card and AUX. Portable for phones, tablets, laptops, computers.