A&F ID ballpoint pen. For outdoor enthusiasts. Ideal for mountain climbing, trekking, etc. Brand new, unused. ・A unique writing instrument that combines an ID waterproof capsule and a ballpoint pen. ・The ID waterproof capsule contains an ID card with personal information that can be written on, which is useful for identification and emergencies. ・You can carry it around with your cell phone or wear it around your neck, which is useful in daily life, as well as during disasters, travel, and outdoor activities. ・When you replace the cap with the ID waterproof capsule side, it becomes a full size pen. You can use a general refill. ・The smart body is precisely machined from a solid block of aluminum alloy or brass to the extreme, allowing you to enjoy the feel of the solid material. How to replace the refill ●Remove the cap and hold the pen side with your left hand, and rotate the ID waterproof capsule side counterclockwise with your right hand to split it into two parts. ●Pull out the empty refill and insert the new refill until it stops. 〇Size / When stored: 8.5mm dia. x 88mm When in use: 7.5mm x 110mm 〇Weight / Aluminum 8g, Brass 22g 〇Refill / PLATINUM BSP-100S BLACK 0.7mm