It doesn't work even with batteries, so is there anyone who can fix it themselves, or who wants it for connecting vehicles? It's an old product, so the white parts are slightly yellowed. The connecting parts have a different design from current products, but can be connected to current products. We'll give you a 100 yen discount for a bulk purchase. (Due to shipping constraints, there are two types.) If you buy it together with the μ-SKY, we'll make it 1500 yen for both. If you want to buy in bulk, please comment first.