The Stilo WL-10 Wireless Helmet Key is designed for connectivity with the new AB0520 (sold separately) WL-10 Wireless intercom. If you're looking for our entire bundle kit, please refer to part number AQ0001. This Helmet key can be utilized with the WL-10 system as a back up or a primary unit. Once charged, simply plug the unit into your Stilo helmet, power on and pair it to the new WL-10 intercom for complete wireless connectivity in the car. On a full charge, the key has power for 5 hours of talk time. Each wireless helmet key provides a range of up to 10 meters, enabling crew members to converse even when outside the vehicle. Wireless key comes with a USB charging lead.