Knauermann PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS vs Kospet Tank M4

What PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS does better (0) and where Tank M4 wins (0) — every spec side by side.

8.8Score

0 advantages≈ $270

Kospet · 2026Tank M4

9.7Score

0 advantages≈ $190

Higher score

8.6Display9.7

4.9Health tracking4.9

Why is PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS better than Tank M4?

PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS has no measurable advantages in this pair.

Tank M4 has no measurable advantages in this pair.

Specifications

Only differences	Knauermann PRO 4 Ultra Smartwatch silber, Silikonband schwarz, Anruf & SOS≈ $2708.8	Kospet Tank M4≈ $1909.7
Design & durability
Case size	24 mm	—
Weight	—	60 g
Lens / cover glass	—	Gorilla Glas
Strap material	Silikon	—
Water resistance	—	10 ATM
Water rating (maker)	—	100 m / 10 bar / 10 ATM
Colours	Silver, Black	—
Display
Screen size	1.95″	1.96″
Display technology	AMOLED	AMOLED
Panel	AMOLED	AMOLED
AMOLED / OLED display	Yes	Yes
Always-on display	Yes	—
Resolution (width)	—	410 px
Resolution (height)	—	502 px
Battery
Battery life (smartwatch mode)	—	10 days
Health sensors
Optical heart rate	Yes	Yes
Blood oxygen (SpO2)	Yes	Yes
ECG	—	Yes
Sleep tracking	—	Yes
Sensors	heart rate, SpO2	heart rate, SpO2
Sports & navigation
Built-in GPS	Yes	Yes
Satellite systems	GPS	GPS
Connectivity
Bluetooth	—	5.3
Platform
Works with	iOS, Android	iOS, Android