Bluetooth speakers

What Bluetooth speakers are

A wireless speaker receives its audio by radio rather than through a cable. Portable models mostly use Bluetooth; home models often use Wi-Fi.

• Built to be carried: Portable wireless speakers are designed around ruggedness, portability and battery life; home models put sound quality first.
• A speakerphone too: Most have a built-in microphone, so they can take a phone call hands-free; the music pauses and resumes after the call.
• A sealed battery: Almost all run on a rechargeable battery the owner cannot replace, so the battery sets the speaker’s working life.
• Some charge your phone: Models with a large battery can act as a power bank; Tribit’s StormBox Micro 3 has a USB-C charge-out port.
• Who makes them: JBL, Bose, Ultimate Ears, Sony, Anker Soundcore, Tribit, Marshall, Beats and Bang & Olufsen fill reviewers’ test lists.

How they work

The phone compresses the music and streams it over a short-range radio link in the 2.4 GHz band. The speaker decodes it, amplifies it and drives its own speaker cones.

• The A2DP profile: The Advanced Audio Distribution Profile carries stereo music; JBL lists A2DP 1.4 plus AVRCP 1.6, the remote-control profile, for the Flip 7.
• Codecs: A codec shrinks the audio for the radio link; JBL’s Go 5 handles SBC, AAC and LC3, and B&O’s Beosound A1 3rd Gen handles aptX Adaptive and AAC.
• Drivers and radiators: Active drivers make the sound; many speakers add passive radiators to strengthen low notes. The WONDERBOOM 4 has two of each.
• Woofer and tweeter: Larger models split the work: the JBL Flip 7 pairs a 45 × 80 mm woofer with a 16 mm tweeter.
• Sound that adapts: Bose’s PositionIQ adjusts the audio to the way the SoundLink Flex (2nd Gen) is placed.
• Range: Bose quotes about 30 feet for the SoundLink Flex (2nd Gen); Ultimate Ears quotes 131 feet (40 m) for the WONDERBOOM 4.
• USB-C charging: JBL quotes 2.5 hours to recharge the Flip 7; Tribit quotes about 2 hours for the StormBox Micro 3 on a 5V/3A charger.

Types

• Palm-size speakers: The smallest, such as JBL’s Go 5 at 0.23 kg, give up battery time: 8 hours, plus 2 with Playtime Boost.
• Bar and bottle shapes: Models such as the Bose SoundLink Flex (2nd Gen) and JBL Flip 7 lie flat or stand up and play 12 to 14 hours.
• 360-degree speakers: Round models such as the WONDERBOOM 4 send sound in every direction instead of one.
• Strap-on speakers: Tribit’s StormBox Micro 3 straps to a backpack or handlebar and sticks to metal with a magnetic back.
• Party speakers: Large handled models such as JBL’s Boombox 4, which RTINGS credits with about 40 hours of battery, suit multi-day camping more than a carry-on.
• Shower speakers: Bluetooth speakers made for bathrooms; many are rated IPX4 against splashes, some IPX7 for immersion.

What to look for

• The IP rating: Under IEC 60529 the first digit rates dust and the second water; IP67 means dust-tight and safe after 30 minutes 1 m under water.
• IP68 terms vary: IP68 means immersion beyond 1 m on the maker’s terms; JBL tests the Flip 7 for 30 minutes in up to 1.5 m of fresh water.
• A stated drop test: Makers name the height: 1 m onto concrete for the Flip 7, 1.5 m (5 ft) for the WONDERBOOM 4, 1.22 m for the StormBox Micro 3.
• Battery hours: Ratings assume moderate volume; Tribit measures the Micro 3’s 24 hours at 50% volume with the default EQ.
• A way to hang it: Bose fits a nylon utility loop, Ultimate Ears a bungee, JBL’s Flip 7 a carabiner, Tribit a silicone strap.
• Stereo pairing: Two matching speakers can play left and right channels; JBL links Auracast models together, and the WONDERBOOM 4 pairs only with WONDERBOOM 4.
• Two phones at once: Multipoint keeps two source devices connected; Bose, Ultimate Ears and B&O list it.

On the plane and on the trip

• Carry-on or checked: The FAA allows lithium-battery devices in both; in checked bags they must be fully powered off and protected from accidental activation.
• Far below 100 Wh: Lithium-ion batteries are limited to 100 Wh each; JBL rates the Flip 7’s battery at 17.28 Wh and the Go 5’s at 3.85 Wh.
• Better in the cabin: The FAA recommends keeping lithium batteries in carry-on bags because they can overheat into thermal runaway without warning.
• Headphones on board: United updated its contract of carriage on February 27, 2026 to allow removing passengers who play audio or video without headphones.
• Bring a charger: Bose ships no wall adapter; Ultimate Ears ships the WONDERBOOM 4 and JBL the Go 5 without a USB cable.
• Quiet in national parks: National Park Service rules bar audio devices louder than 60 dBA at 50 feet, and unreasonable noise at any level.
• Phone backup: The StormBox Micro 3 can top up a phone over USB-C; spare power banks themselves must travel in carry-on bags only.

Limits and care

• Waterproof, not a pool toy: Bose says the SoundLink Flex (2nd Gen) floats and survives accidental drops in water up to 30 minutes, but is not meant for use in water.
• Dry before charging: Bose says to make sure the charging port is fully dry before charging and to clean the body with a soft cloth, without detergents.
• Close the port cover: Tribit says to seat the rubber cover tightly before using the Micro 3 around water.
• Heat limits: JBL lists a maximum battery operating temperature of 45 °C (113 °F) for the Flip 7 and 40 °C (104 °F) for the Go 5.
• Range in practice: Ultimate Ears notes real range varies with the setting, the environment and the number of connected devices.
• Mono or stereo: Entry-level speakers have a single driver; stereo takes two drivers or two paired speakers.
• Battery service: Bang & Olufsen replaces the Beosound A1’s battery at authorized service centers or B&O showrooms.

A short history

Bluetooth is named after Harald “Bluetooth” Gormsson, the Danish king who united Denmark and Norway in 958. Intel’s Jim Kardach suggested it in 1996 as a temporary code name.

• May 1998: Ericsson, IBM, Intel, Nokia and Toshiba announce the Bluetooth Special Interest Group.
• 1999: Bluetooth 1.0 is adopted.
• May 2013: Ultimate Ears introduces the UE BOOM, billed as the first battery-powered stereo speaker with 360-degree sound.
• December 2016: Bluetooth 5 is released.
• July 2022: The Bluetooth SIG announces that the LE Audio specifications are complete.
• August 2024: Bluetooth 6.0 is released; JBL’s Go 5 and Tribit’s StormBox Micro 3 now use it.
• May 2025: Bang & Olufsen releases the Beosound A1 3rd Gen.