Bose SoundLink Flex (2nd Gen) vs Bose SoundLink Plus

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SoundLink Flex (2nd Gen) compared with SoundLink Plus
BoseSoundLink Flex (2nd Gen)BoseSoundLink Plus
Overview
ReleasedSeptember 2024June 2025
Sound
TypePortable speakerPortable speaker
Dolby AtmosNoNo
Drivers–One subwoofer, one tweeter and four passive radiators
Room tuningPositionIQ senses the speaker's orientation and adjusts the sound; adjustable EQ in the Bose appAdjustable EQ in the Bose app
Connections
Wi-FiNoNo
BluetoothYesYes
AirPlayNoNo
Voice assistantsNoneNone
BluetoothBluetooth 5.3 with a 9 m range; multipoint connection to two devices; aptX Adaptive with Snapdragon Sound devicesBluetooth 5.4 with a 9 m range; SBC, AAC and aptX Adaptive (with Snapdragon Sound devices); multipoint connection to two devices; Google Fast Pair; A2DP, AVRCP, SPP, iAP and BLE; remembers up to six devices
PortsUSB-C (charging)USB-C in and out (charges other devices at up to 15 W, 5 V/3 A)
StreamingBluetooth; the shortcut button can start Spotify TapBluetooth; the shortcut button can start Spotify Tap
Multi-roomStereo Mode with a second Flex (2nd Gen), or Party Mode with another current SoundLink speaker (Micro 2nd Gen, Plus or Max); SimpleSync with Bose smart soundbars and speakersStereo Mode with a second SoundLink Plus; Party Mode with the Micro (2nd Gen), Flex (2nd Gen) or Max; SimpleSync with Bose smart soundbars and speakers
AppBose appBose app
Design
Battery life (maker's claim)Up to 12 hoursUp to 20 hours
Water and dust resistanceIP67IP67
Weight0.59 kg (better)1.53 kg
Battery life detailUp to 12 hours; up to 3 hours at maximum volume; up to 4 hours to charge; no power adapter includedUp to 20 hours; up to 4 hours at maximum volume; up to 5 hours to charge
ControlsButtons on top, including a programmable shortcut button (linking two speakers by default; Spotify Tap or the phone's voice assistant)Buttons on top, including a programmable shortcut button (linking two speakers by default; Spotify Tap or the phone's voice assistant)
MicrophonesBuilt-in microphone for speakerphone callsNone
MountingNylon utility loop for carrying or clipping to a bagNylon utility rope for carrying or clipping
Size2.06 × 7.93 × 3.56 in (H × W × D); 1.291 lb4.114 × 11.169 × 3.402 in (H × W × D) on Bose UK's spec table; the launch press release gives 9.1 in wide; 3.373 lb
ColoursBlack, Blue Dusk, Alpine Sage and Sandstone, plus limited editions; Bose UK currently sells Dewdrop MintBlack, Blue Dusk and limited-edition Citrus Yellow at launch, plus later limited editions
In the boxSoundLink Flex (2nd Gen), USB-C to USB-A cable, safety sheetSoundLink Plus, USB-C to USB-C cable, safety sheet

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