ROCKBROS Bicycle Smart Lock NFC U-Lock MTB Road Bike Purchased new in May 2025, used about 10 times on a road bike in an indoor parking area. Accessories are as shown in the photos, including stickers, a key chain, and the lock can be unlocked with Android NFC. It can also be unlocked with a regular key. The box is battered due to being an imported product. I believe it is not sold in Japan. No individual sales. No price reduction. ※Product Description: Brand: ROCKBROS Product Name: NFC Smart Lock Material: Aluminum alloy + ABS + Silicone Weight: Approximately 564g (net weight) Size: 190*120*37mm Battery: 600mAh/3.7V Lithium battery Endurance: Up to 1500 unlocks Temperature: -25~65°C Application: Road bikes, MTBs, folding bikes, etc.