Revealed at Eurobike, the SON 29 S could be the sleekest and most compact dynamo hub out there.SON already enjoys a reputation for compact and powerful generator hubs, with its highly regarded SON 28.But the SON 29 S could be mistaken for an oversized, straight-pull flanged hub, taking compact power generation to a whole new level.A smaller hub shellThe SON 29 S has a small hub shell. - Jack Luke / Our MediaThe 29 S has a smaller-diameter hub shell and casing than SONs other hubs.The 29 S sits behind a six-bolt disc brake rotor mount. It contains a new generator assembly that despite its compact size meets the standard performance values expected of a dynamo hub.SON claims intelligent charging electronics deliver the high levels of power required from a dynamo hub.The company says the 29 S meets the current StVZO requirements for a 29-inch wheel dynamo hub.The same power levers as the SON 28The dynamo sits behind the six-bolt rotor mount. - Jack Luke / Our MediaSON says the 29 S has similar performance figures to its 28 hub, thanks to reworking the system parameters.The new slender hub provides the same power levers, but at the (relatively) lower speeds of off-road riding.The hub itself is designed around straight-pull hub flanges, which optimises the stiffness and robustness of a wheel build, according to SON.The 29 S has SONs Coaxial port on the flange of the non-disc side of the hub.The new 29 S should be available later this summer, priced at 549 (international pricing TBC).With 24- and 32-spoke options and a claimed weight of 410g, we expect to see the 29 S built onto plenty of high-end custom gravel bikes and bikepacking rigs in the not-too-distant future.SON Ladelux lightThe Ladelux headlight has a buffer battery. - Stan Portus / Our MediaSON also had its new Ladelux headlight on display at Eurobike. It says the Ladelux is similar to the SON Edelux II, but it adds a buffer battery that will help keep the headlight on even when you stop pedalling.The light comes with a handlebar control that can be used to charge a smartphone. - Stan Portus / Our MediaThe charging electronic and the buffer battery are integrated into the Ladeluxs housing and can draw 12 watts from the dynamo hub.The light has a high beam of 180 lux and a low beam of 120 lux.The Ladelux also comes with a handlebar switch with a magnetic connector to charge external devices, such as a smartphone, even when the light is on.SON says the Ladelux will be available this summer and will cost 479.