The Convergent Hunting Bullet HP Electronic Game Call was designed to be very rugged, plenty loud, exceptionally clear, and easy to use in conjunction with the Convergent Hunting Solutions Companion Mobile Applications. (*This product requires an Android or Apple mobile device to use as a controller via the Convergent Hunting apps available on either Google Play or Apple iTunes store.) All sounds packaged in Convergent Hunting's Mobile Calling Apps have been recorded in High Definition and are digitally mastered to provide you with sounds that will elicit responses from even the most wary animals. The Bullet HP has a working range of over 200 ft. and a powerful 10W audio amplifier. It uses rechargeable internal lithium ion batteries for up to 10 hours of continuous run time. It has a built-in decoy controllable via the app. The decoy features dual directional, erratic movement that has proven very effective in triggering responses from even the most suspicious predators. Together, the Convergent Hunting apps and Convergent Bullet HP combine the latest in technology to provide you with a complete calling platform that is unique, versatile, all wrapped-up in a high performance package. The Bullet HP is made of highly durable polycarbonate plastic with a reinforced speaker grill area for maximum impact resistance. It is UV-treated to withstand exposure to the sun. This Convergent Hunting product and companion mobile applications were designed and exhaustively tested by Byron South, one of the most recognized names in the predator hunting world.