Mycelium is a company that works in the field of bitcoin, specializing in hardware, software and security, with the Mycelium Wallet as one of its main products, a wallet that allows one to save, send and change bitcoin. Although most of its functions are a bit complicated for inexperienced users, through which you will have to look for tutorials that can help
Possible operations in this wallet can be done in one account or in several. Regardless of the way you prefer, the security offered by this wallet is high level, it is certainly a recommended wallet because if Bitcoin is yours, this wallet may be ideal.