The reason for the drilled lugs is because the bracelet end link that goes in between the lugs is full solid. It's machined to fit perfectly with no free-play to allow a spring remover any access. Access is only from the holes. And it is a mighty LARGE pin. The thickest pin I've ever seen or had in a dive watch. Chances of it giving way in the water is almost zilch!
I recently obtained a prestine condition vintage (early 2000) Seiko SMY001P kinetic diver which is a precursor to this SKA model. Mine has the 5m63 mov't and yes it needed a new battery (rechargeable) as it wasn't worn for years, just sat. Amazingly, a couple shakes and the watch came to life. New battery now will keep it alive for years. it is 43mm case with the discontinued sapphlex crystal, which is hardlex with a sapphire coating and a day-date complication. Original jubilee bracelet. A very rare find. Bottom line, these early kinetic divers are true collectors watches. Everyone should have at least one kinetic in their collection. Good review!
I just had my SKA367 yellow dial version repaired (replaced that pesky capacitor or battery). It's a beautifully designed and chunky watch. Love the combination of brushed and polished surfaces on the case and bracelet. Wished there is automatic movement for these.
I just bought one from Japan, it is silver with a metal bracelet. On the dial it also includes the word “scuba,” I don’t know the reference number of the watch. Any guesses?