Knauermann PRO 4 Mini 2026 rund silber, EKG, IP67 vs Polar Street X

What PRO 4 Mini 2026 rund silber, EKG, IP67 does better (2) and where Street X wins (0) — every spec side by side.

9.5Score

2 advantages≈ $280

Higher score

Polar · 2026Street X

5.3Score

0 advantages≈ $270

9.5Display6.4

4.9Health tracking9.8

Dimensions

Size comparison

PRO 4 Mini 2026 rund silber, EKG, IP67Street X

	PRO 4 Mini 2026 rund silber, EKG, IP67	Street X	Difference
Case size	41 mm	45 mm	−4 mm

Drawn to the same scale from the official dimensions (front and side).

Street X has no measurable advantages in this pair.

Specifications

Only differences	Knauermann PRO 4 Mini 2026 rund silber, EKG, IP67≈ $2809.5	Polar Street X≈ $2705.3
Design & durability
Case size	41 mm	45 mm
Weight	—	48 g
Thickness	—	13.8 mm
Height	—	45 mm
Width	—	45 mm
Case material	Plastic / polymer	Plastic / polymer
Strap material	Silikon	—
Water resistance	—	5 ATM
Water rating (maker)	—	WR50
Military-grade (MIL-STD-810)	—	Yes
Colours	Silver	Night Black, Snow White, Forest Green
Display
Screen size	1.56″	1.28″
Display technology	AMOLED	AMOLED
Panel	AMOLED	AMOLED
AMOLED / OLED display	Yes	Yes
Touchscreen	—	Yes
Resolution (width)	480 px	416 px
Resolution (height)	480 px	416 px
Pixel density	—	325 ppi
Battery
Battery life (smartwatch mode)	—	10 days
GPS battery life	—	42 h
Battery capacity	—	385 mAh
Battery type	—	Li-Pol
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	—
Skin temperature	—	Yes
Temperature sensor	—	Yes
HRV tracking	—	Yes
Sleep tracking	—	Yes
Sensors	heart rate, SpO2	Barometer, Magnetometer compass, Accelerometer, Gyroscope
Sports & navigation
Built-in GPS	—	Yes
Offline maps	—	No
Barometric altimeter	—	Yes
Compass	—	Yes
LED flashlight	—	Yes
Platform
Operating system	—	Polar OS
Platform	—	Proprietary
Works with	iOS, Android	Android, iOS