Kensington Pro Fit Ergo TB450 vs Kensington Pro Fit Ergo TB550

Comparison of Pro Fit Ergo TB450, Pro Fit Ergo TB550

39 specifications	A Kensington Pro Fit Ergo TB450View product	B Kensington Pro Fit Ergo TB550View product
Mouseidentical
Connectivity technology	Wireless	Wireless
Device interface	RF Wireless + Bluetooth	RF Wireless + Bluetooth
Movement detection technologyKnown for one	—Unknown — not stated by the source	Optical
Movement resolutionKnown for one	—Unknown — not stated by the source	1600 DPI
Scroll typeKnown for one	—Unknown — not stated by the source	Trackball/Wheel
Buttons quantityKnown for one	—Unknown — not stated by the source	7
Programmable mouse buttonsKnown for one	—Unknown — not stated by the source	Yes
Number of programmable buttonsKnown for one	—Unknown — not stated by the source	7
Frequency bandKnown for one	—Unknown — not stated by the source	2.4 GHz
Bluetooth Low Energy (BLE)	Yes	Yes
Trackball diameter	3.4 cm	3.4 cm
Designidentical
Form factor	Right-hand	Right-hand
Ergonomic designKnown for one	—Unknown — not stated by the source	Yes
Product colourKnown for one	—Unknown — not stated by the source	White
Ergonomicsidentical
Plug and PlayKnown for one	—Unknown — not stated by the source	Yes
Poweridentical
Power sourceKnown for one	—Unknown — not stated by the source	Batteries
RechargeableKnown for one	—Unknown — not stated by the source	Yes
Battery life (max)Known for one	—Unknown — not stated by the source	2920 h
USB Type-C charging portKnown for one	—Unknown — not stated by the source	Yes
Battery typeKnown for one	AA	—Unknown — not stated by the source
Weight & dimensionsidentical
WidthKnown for one	—Unknown — not stated by the source	138.2 mm
DepthKnown for one	—Unknown — not stated by the source	93.4 mm
HeightKnown for one	—Unknown — not stated by the source	50.1 mm
Packaging dataidentical
Quantity per packKnown for one	—Unknown — not stated by the source	1 pc(s)
Package widthKnown for one	105 mm	—Unknown — not stated by the source
Package depthKnown for one	200 mm	—Unknown — not stated by the source
Package heightKnown for one	60 mm	—Unknown — not stated by the source
Package weightKnown for one	275 g	—Unknown — not stated by the source
Packaging contentidentical
Receiver includedKnown for one	—Unknown — not stated by the source	Yes
Receiver type	Nano receiver	Nano receiver
Other featuresidentical
Special featuresKnown for one	EQ; SmartFitTM	—Unknown — not stated by the source
Compatible operating systemsKnown for one	Windows 11	—Unknown — not stated by the source
TrackballKnown for one	Yes	—Unknown — not stated by the source
Logistics dataidentical
Products per master (outer) caseKnown for one	4 pc(s)	—Unknown — not stated by the source
Master (outer) case widthKnown for one	120 mm	—Unknown — not stated by the source
Master (outer) case lengthKnown for one	265 mm	—Unknown — not stated by the source
Master (outer) case heightKnown for one	220 mm	—Unknown — not stated by the source
Master (outer) case gross weightKnown for one	1.1 kg	—Unknown — not stated by the source
Master (outer) case net weightKnown for one	773 g	—Unknown — not stated by the source

A dash means the value is not stated by the source. Unknown values are never counted for or against a product, and there is no overall score.