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  3. Wave Flex 2 vs Accentum Open

JBL Wave Flex 2 vs Sennheiser Accentum Open

What Wave Flex 2 does better (5) and where Accentum Open wins (1) — every spec side by side.

JBL Wave Flex 2
JBL · 2025Wave Flex 2
9.0Score
5 advantages≈ $55
Higher score
vs
Sennheiser Accentum Open
Sennheiser · 2025Accentum Open
5.1Score
1 advantage≈ $65
9.3Noise control & calls5.2
7.6Battery4.4

Why is Wave Flex 2 better than Accentum Open?

  1. Battery life10 h vs 6 h+67%
  2. Total with charging case40 h vs 28 h+43%
  3. Highest frequency20,000 Hz vs 15,000 Hz+33%
  4. Lowest frequency20 Hz vs 25 Hz+25%
  5. Driver size12 mm vs 11 mm+9%

Why is Accentum Open better than Wave Flex 2?

  1. Charging time2 h vs 1 h2×
Specifications

Side by side

JBL Wave Flex 2JBL Wave Flex 2≈ $559.0
Sound
FitIn-earIn-ear
Ear cup design—Open-back
Driver type—Dynamic
Driver size12 mm11 mm
Lowest frequency20 Hz25 Hz
Highest frequency20,000 Hz15,000 Hz
Impedance16 Ω—
Sensitivity98 dB109 dB
Noise control
Active noise cancellingYesYes
Microphones—2
Noise reduction for calls—Yes
Battery & charging
Battery life10 h6 h
Total with charging case40 h28 h
Charging time2 h1 h
Quick charge (claimed)10 min → 2 h—
Fast charging supportYesYes
Connectivity
WirelessYesYes
Bluetooth version5.35.3
Bluetooth codecs—AAC, SBC
Hi-res codec (LDAC / aptX HD / LHDC)—No
aptX—No
LDAC—No
Multipoint (two devices)—Yes
USB-CYesYes
Design & build
Earbud weight (each)—8.7 g
Protection ratingIP54IPX4
Water resistance (IPx)IPx4IPx4
Dust protection (IP)5—
Colours—Cream, Black, Blush
Features
Touch controls—Yes
Wear detection (auto pause)—Yes
Hands-free callsYesYes
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