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  3. Up vs B3

Amazfit Up vs Sudio B3

What Up does better (1) and where B3 wins (0) — every spec side by side.

Amazfit Up
Amazfit · 2025Up
3.8Score
1 advantage≈ $40
Higher score
vs
Sudio B3
Sudio · 2025B3
0 advantages≈ $40

Why is Up better than B3?

  1. Battery life6 h vs 5.5 h+9%

Why is B3 better than Up?

B3 has no measurable advantages in this pair.

Specifications

Side by side

Amazfit UpAmazfit Up≈ $403.8
Sudio B3Sudio B3≈ $40
Sound
FitIn-earOpen-ear
Ear cup designOpen-backOpen-back
Driver typeDynamicDynamic
Driver size—10 mm
Impedance—32 Ω
Sensitivity—98 dB
Noise control
Active noise cancellingNo—
Noise reduction for callsYes—
Battery & charging
Battery life6 h5.5 h
Total with charging case24 h—
Charging time4 h—
Connectivity
WirelessYesYes
Bluetooth version5.3—
Bluetooth codecsAAC, SBCSBC
Hi-res codec (LDAC / aptX HD / LHDC)NoNo
aptXNoNo
LDACNoNo
Multipoint (two devices)—Yes
USB-C—Yes
Design & build
Weight—50 g
Protection ratingIPX4—
Water resistance (IPx)IPx4—
ColoursBlack—
Features
Touch controlsYesYes
Hands-free callsYesYes
To compare: 0up to 4 models
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