I have a CALLANY HT500 call center phone that is already equipped with a one-ear headset with no volume control. But I prefer double ears and volume control is a must for me personally as each call can be heard differently or too loud. Great headphones, just wish they were louder. I think it depends on each person's hearing and phone compatibility. Overall I am very happy with the purchase. Also a very great seller/company as they were quick to correspond with me and really took care of any issue I might have with their product.
Dell Laptop Battery E6420, E5430, E6520 & More - Long-Lasting Power For Inspiron & Vostro Models
20 Review
Power Up Your Lenovo Laptop With A 65W Charger: Compatible With Thinkpad T460, T470, T540P & More!
36 Review
7-8 Inch Kid Tablet Sleeve - Evecase Cute Fairy Tale Princess Themed Neoprene Carrying Case Bag With Dual Handle & Accessory Pocket (Pink & Purple Trim)
44 Review
Rose Gold Touchpad Keyboard Case For IPad Pro 12.9 2020/2018 - Wireless Smart Magic Backlit Trackpad Keyboard
23 Review