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  3. SoundLink Flex (2nd Gen) vs ULT FIELD 3

Bose SoundLink Flex (2nd Gen) vs Sony ULT FIELD 3

What SoundLink Flex (2nd Gen) does better (1) and where ULT FIELD 3 wins (1) — every spec side by side.

Bose SoundLink Flex (2nd Gen)
6.5Score
1 advantage≈ $110
vs
Sony ULT FIELD 3
Sony · 2025ULT FIELD 3
8.4Score
1 advantage≈ $110
Higher score
4.4Battery8.1
7.8Build & features5.5

Why is SoundLink Flex (2nd Gen) better than ULT FIELD 3?

  1. Weight590 g vs 1,200 g2×

Why is ULT FIELD 3 better than SoundLink Flex (2nd Gen)?

  1. Battery life12 h vs 24 h2×
Specifications

Side by side

Sony ULT FIELD 3Sony ULT FIELD 3≈ $1108.4
Sound
Output power—30 W
Lowest frequency—20 Hz
Highest frequency—20,000 Hz
StereoYes—
Battery & charging
Battery life12 h24 h
Battery capacity3,200 mAh—
Charging time4 h—
Power bank function—Yes
Mains poweredNoNo
Battery powered (portable)YesYes
Connectivity
WirelessYesYes
Bluetooth version5.35.2
Bluetooth codecsSBCAAC, SBC
Hi-res codec (LDAC / aptX HD / LHDC)NoNo
aptXNoNo
LDACNoNo
USB-CYesYes
Smart & streaming
Companion appYes—
Design & build
Weight590 g1,200 g
Width201 mm256 mm
Height904 mm113 mm
Depth52 mm79 mm
Protection ratingIP67IP67
Water resistance (IPx)IPx7IPx7
Dust protection (IP)66
Features
Hands-free callsYesYes
Party / stereo pairingYesYes
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