Peace be upon you. Today we are offering you a C4Watch smartwatch. It has many features, including a battery that lasts for 6 days of heavy use, and possibly more. It has been used for only 3 months, and I don't wear it much, which is the reason for selling. It has sleep and health monitoring, a calculator, is waterproof, and comes with earphones. If the earphones get wet, water will come out with a sound. The watch is really amazing, and I highly recommend it. The sale is by auction.