Sony ULT Field 1 vs Bose SoundLink Flex

Both are small, rugged Bluetooth speakers with similar ratings, but they lean different ways. The Sony ULT Field 1 is the better pick for bass lovers and call quality, with a punchy sound and a 30 W rating. The Bose SoundLink Flex is the better pick for outdoor use and battery life, with IP67 protection, a utility loop and up to 12 hours of play time. Owners of both praise the build and portability; the Sony edges ahead on low-end punch, the Bose on ruggedness and positioning.

• Choose the Sony ULT Field 1 if you want the stronger bass and clearer calls in a light, compact speaker.
• Choose the Bose SoundLink Flex if you need a speaker that survives drops, dust and water and runs all day on a charge.