This Apple Watch (38 mm Series 3 Cellular) replacement battery is what you need to bring your dead smartwatch back to life!

Battery degradation is an inevitable part of your smartwatch's lifespan — extend it with this new replacement battery compatible with the 38 mm Series 3 Cellular Apple Watch model. If your smartwatch won’t turn on, won’t hold a charge, or you simply experience poor battery life, this replacement battery may be what you need to fix it.