Used once. Decided I didn't need it. The RockShox Reverb AXS 30.9 170mm Wireless Dropper Seatpost is a high-quality component designed for mountain bikes. Made of durable aluminium, this sleek black seatpost features a wireless charging system that includes the seatpost, trigger, battery, and charger. With a 30.9mm diameter and 480mm length, this seatpost offers a 170mm drop for ultimate versatility on the trails. Compatible with mountain bike frames, this top-of-the-line model from RockShox is a must-have for serious cyclists looking to enhance their performance on challenging terrain.