Here is another gift idea for hunters in your life. The ICOtec Night Stalker+ is a Bluetooth predator call with a range of up to 100 yards. It has 165 call sounds to get you started. It can play two sounds simultaneously. You can store up to sound files with a removable SD card.
This gadget has a max volume rating of 130+dB. You can record and play up to 20 of your favorites easily. This predator call plays 16, 24, and 32 bit .wav files. You can stream audio to it from your phone. It works with the Animal Audio app.