Easy Installation:Simple to attach, this remote switch is a hassle-free accessory. Compatibility:Designed specifically for Convoy S21A, S21B, and L21B flashlights. for Convoy S21b Remote Switch|Convoy S21b Switch|Scalable Length:Adjustable from 40-85cm, offering flexibility for various lighting needs. High-Temperature Resistance:Made to withstand up to 105℃, ensuring durability in various conditions. Lightweight Design:At just 50g, this switch adds minimal bulk to your flashlight setup. Remote switch for convoy S21A S21B L21B flashlight Notice: Only remote switch, not including flashlight. Color: Black Material: Aluminum Alloy Package Contents: 1 x Remote switch Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.