Up for auction here is an incredibly rare 2 watch set of both Casio G-Shock Transformer collaborations from 2007/2008. These are very rarely seen for sale outside of Japan and to see both for sale together is almost never heard of. 

These are both boxed with instructions. I have worn them both, sparingly. The DW-6900 Megatron model looks almost mint. The Autobot DW-5600 shows tiny signs of wear on the strap and case back, but that is all. 

I bought both of these from Japan and haven't seen any of the DW-6900 model for sale there in years (the DW-5600 does pop up occasionally). 

I will NOT split these, they are for sale together only. A UK sale is preferred due to the ridiculous shipping costs with insurance outside of the UK. I will sell outside of the UK but shipping will be with a courier and it won't be cheap with insurance on (I will only ship tracked and signed for). I will put an estimate of £40 for shipping, it may be more (I will increase the invoice) and it might be less (I will refund the difference).