Does it compatible Yealink T19 phones?

Yes, but you need the HL10 Lifter to answer/end calls when away from the phone. https://amzn.to/3V79B96

Has anyone used yealink wh63 dect headset? which one do you think is better?

I like Yealink because I have a Yealink VoIP phone and their headset are no worse than the Plantronics, at least in terms of sound quality and battery life.

ASIN	B00R6WYK2O
Age Range (Description)	Adult
Audio Driver Type	Dynamic Driver
Batteries	1 Lithium Polymer batteries required.
Battery Life	7 Hour
Best Sellers Rank	#2 in Telephone Headsets
Bluetooth Range	100 Meters
Bluetooth Version	4.0
Cable Feature	Without Cable
Charging Time	7 Hours
Compatible Devices	Telephones
Connectivity Technology	Wireless
Control Method	Touch
Control Type	Volume Control
Controller Type	on-device buttons
Customer Package Type	FFP file
Customer Reviews	4.2 4.2 out of 5 stars (468)
Date First Available	December 18, 2014
Earpiece Shape	Over-Ear
Frequency Response	1.9 GHz
Generation	1
Hardware Interface	Bluetooth
Headphones Jack	3.5 mm Jack
Included Components	Amplifier/Charging Base,AC Power Supply,RJ-11 Connecting Cable,(3) Ear Loops,(2) Ear Tips,(1) Over-The-Head Band
Is Discontinued By Manufacturer	No
Item Weight	2.88 ounces
Item model number	CS540
Manufacturer	Plantronics
Material	Plastic
Model Name	CS540
Number of Items	1
Product Dimensions	7.5 x 6.5 x 6.5 inches
Recommended Uses For Product	Calling
Series Number	1
Special Feature	Sweatproof
Specific Uses For Product	Business
Style	Standard
Supports Bluetooth Technology	No
UPC	768265383695
Units	1.0 Count
Water Resistance Level	Not Water Resistant
Wireless Communication Technology	Bluetooth

Plantronics - CS540 Wireless DECT Headset (Poly) - Single Ear (Mono) Convertible (3 Wearing Styles) - Connects to Desk Phone - Noise Canceling Microphone

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