If you need help on the water, you'll be glad you have the Orion Whistle/Mirror Kit on your boat. The kit comes with a high dB whistle to grab attention audibly and a mirror with a viewfinder to help you reflect the sun's rays to catch the eye of others on the water. Includes a lanyard. The Orion Whistle/Mirror Kit comes with a whistle and a mirror with a viewfinder and a lanyard.