Motorola's most comfortable headset, the HKLN4604 has been designed to accommodate most ear sizes, is light weight, and hygienic. The Motorola HKLN4604 can be worn on either ear and can be worn comfortably with hoop earrings. This product comes with a one year full replacement warranty. The Motorola HKLN4604 headset is worn by Walmart Associates Nationwide. The A is the same part as the and the HKLN4604.