Wena By Sony Watch Head Solar Chronograph Black WNWHCS01BB.AE. Features tough, impact and scratch resistant spherical sapphire glass and approximately 6 months operation from a full charge. The name wena stands for, wear electronics naturally, and expresses how everyday products can evolve with innovation. Choose a wena wrist pro or wena wrist active smart band, combine it with your precious watch or a new watch face, then discover a whole range of smart functions without compromising tradition.