For designer Max Bill, visual sustainability was of paramount importance. This is a claim that the Max Bill MEGA Solar combines with energy sustainability: the highly efficient app-connected radio movement is powered by the sun

Technology : Connected radio-controlled solar movement J101.85
Case : Stainless steel, Ø 38.0 mm, height 9.0 mm, glass case back with “sun” image printed on the inside
Strap : Vegan apple-fiber strap with microfiber lining, stainless steel buckle, quick release feature for quick and easy strap replacement
Function : Date, connected to the Junghans app, adjustment of all current time zones precisely to the second, dark power reserve up to 3 years, perpetual calendar, radio reception in Europe, UK, USA, Japan
Dial : white, luminous dots with environmentally-friendly luminous substance, hands with environmentally-friendly luminous substance
Glass : Domed sapphire crystal with anti-reflection coating on both sides
Water Resistance : Water-resistant up to 5 bar