The UE Megaboom 3 has what you want in a portable Bluetooth speaker: good sound quality, long battery life, ruggedness and more.
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Ultimate Ears Megaboom 3 Speaker review: 360 degrees of sound - DXOMARK
UE Megaboom 3 Review
Ultimate Ears Megaboom 3 Review: An Already Great Portable Speaker Gets Even Better
UE Megaboom 3 review: UE Megaboom 3 is more durable, has better bass and a 'magic' button - CNET
UE Megaboom 3 Review
Ultimate Ears MEGABOOM 3 Review - Rock the party with this speaker
Ultimate Ears Megaboom 3 Speaker review: 360 degrees of sound - DXOMARK
Ultimate Ears Megaboom 3 Review
The Excellent UE Megaboom 3 Speaker Is $100 Off Right Now
UE Megaboom 3 review: UE Megaboom 3 is more durable, has better bass and a 'magic' button - CNET
Ultimate Ears Megaboom 3 Reviewed • Audiostance
Review: UE Megaboom 3 Increased Durability And Wireless Quality