Safety Works SWX00260 Digital am/fm earmuff , Blue Bluetooth MP3/AM/FM stereo ear muffs that offers a Noise Reduction Rating (NRR) of 23 db, helping prevent hearing damage. Includes AAA Duracell batteries (3). Features Listen to music hands-free after pairing these ear muffs to another Bluetooth device. Digital Bluetooth MP3/AM/FM Stereo Ear Muffs offers a Noise Reduction Rating (NRR) of 23 db, helping prevent hearing damage. Allows up to 10 AM and 10 FM preset stations to help allow you to listen to your favorite stations. AM/FM/MP3-compatible (connection cord for MP3 player is not included). Includes AAA Duracell batteries. USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.