Suunto D4 Dive Computer I used this for freediving. I didn't use it very often. I am selling it because I have finished freediving. The last time I used it was about 10 years ago. It was working fine then. The battery is now dead. Therefore, I haven't been able to confirm its operation. I think you should have it overhauled along with a battery replacement before using it. That's why I'm selling it at a low price. It was working fine the last time I used it, but since it hasn't been used for a long time, and because it is a product that concerns your life, please be sure to have it overhauled. I cannot take any responsibility. I had a protective seal on the face. I removed it for the listing. The face was clean. (Photos 1 and 2 are before removing the seal. Photos 5, 6, and 7 are after removing it.) The box shows signs of aging. There are no major scratches on the main unit, but it does show signs of use. The spare (different length?) strap is unused. It's an old item that has been stored for a long time. Thank you for your understanding. #Suunto