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  3. QuietComfort Ultra Earbuds (2nd Gen) vs Comfo Flex

Bose QuietComfort Ultra Earbuds (2nd Gen) vs Edifier Comfo Flex

What QuietComfort Ultra Earbuds (2nd Gen) does better (1) and where Comfo Flex wins (5) — every spec side by side.

Bose QuietComfort Ultra Earbuds (2nd Gen)
Bose · 2025QuietComfort Ultra Earbuds (2nd Gen)
4.8Score
1 advantage≈ $230
Higher score
vs
Edifier Comfo Flex
Edifier · 2025Comfo Flex
5 advantages
3.7Battery8.5

Why is QuietComfort Ultra Earbuds (2nd Gen) better than Comfo Flex?

  1. aptXYes · Comfo Flex: No

Why is Comfo Flex better than QuietComfort Ultra Earbuds (2nd Gen)?

  1. Battery life6 h vs 10 h+67%
  2. Hi-res codec (LDAC / aptX HD / LHDC)No · QuietComfort Ultra Earbuds (2nd Gen): Yes
  3. Total with charging case24 h vs 40 h+67%
  4. Water resistance (IPx)IPx4 vs IPx5+25%
  5. LDACNo · QuietComfort Ultra Earbuds (2nd Gen): Yes
Specifications

Side by side

Bose QuietComfort Ultra Earbuds (2nd Gen)Bose QuietComfort Ultra Earbuds (2nd Gen)≈ $2304.8
Edifier Comfo FlexEdifier Comfo Flex
Sound
FitIn-earOpen-ear
Ear cup designClosed-back—
Driver typeDynamic—
Lowest frequency—20 Hz
Highest frequency—40,000 Hz
Sensitivity—90 dB
Spatial / 3D audioYes—
Hi-Res AudioYes—
Adjustable equaliserYes—
Noise control
Active noise cancellingYes—
Adaptive ANCYes—
Transparency / ambient modeYes—
Microphones4—
Battery & charging
Battery life6 h10 h
Battery life with ANC4 h—
Total with charging case24 h40 h
Battery capacity—70 mAh
Charging time1 h—
Fast charging supportYes—
Wireless charging (case)Yes—
Connectivity
WirelessYesYes
Bluetooth version5.35.4
Bluetooth codecsaptXLDAC, AAC, SBC
Hi-res codec (LDAC / aptX HD / LHDC)NoYes
aptXYesNo
LDACNoYes
Multipoint (two devices)Yes—
USB-CYesYes
Smart & streaming
Companion appYes—
Design & build
Earbud weight (each)10 g—
Protection ratingIPX4IP55
Water resistance (IPx)IPx4IPx5
Dust protection (IP)—5
Features
Touch controlsYes—
Hands-free callsYes—

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