The SWATCOM Shooting Headset maintenance consists of a replacement hygiene kit. It is recommended that you replace hygiene kits every 6 months to maintain hygiene and comfort levels for your set. If the sound quality of your headset has diminished it could be that your batteries are running low. It’s worth replacing these at the start of each season to ensure that your headset continues to perform to the optimum level. EU Tariff code: 6203490000