Plantronics B4220T Bluetooth Dual-Ear Headset - Fair Condition 155584355832 but when the arrows are

but when the arrows are pushed

Manufacturer Nuvo Model Number NV-18DDSP SKU 19-68395 Ref 23-97738

but the last digit to the right on the display has a dead pixel

Manufacturer FEI Company Part Number 4022-199-6679 SKU 19-66614 Ref 23-94595

Manufacturer Festo Model Number LF-M2-G3/8ER SKU 19-66571 Ref 23-94505

Plantronics B4220T Bluetooth Dual-Ear Headset - Fair Condition 155584355832 but when the arrows areCondition Used Description This item is fully tested and in excellent working order. Item will come with a 30 Day Warranty. Cosmetically in fair condition showing moderate to heavier scuffs scratches blemishes from previous use. The material on the top of the headset is peeling some. Includes Bluetooth Dual Ear Headset as pictured. No additional items or accessories are included. Unless pictured, no power adapter power cable included. Photos are of