The Walker’s FireMax Electronic Earmuffs with Rechargeable Battery are the perfect choice for the type of people who want a rechargeable option for hearing protection when batteries aren’t close at hand. The FireMax can be charged with a USB-C charging cable to run for 150 hours on a charge. Works in tandem with the Firemax Walkie Talkie (550264). Slim low profile design. Digital audio circuit. Low noise/Frequency tuned for natural sound clarify. Auto shut off. Digital soft touch silent button operation. 2000 mAH (150 hours battery life). 4 Frequency modes. High Frequency Boost. USB-C charging port. Rubber Tacti-Grip headband. Cooling gel earpads (available on most models). Full dynamic range HD Speakers for clear balanced sound. Sound activated compression. Sound dampening composite housing. 3.5mm audio jack. USB-C Charging cable included. 20-23 NRR (Target). This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer or other reproductive harm. All items are described as accurately as possible. If you have a problem with your order please message us first so we can work it out. Most times 3-5 days is the norm. Lately 2-3 weeks hasnt been out of the realm of possibility. This policy is used by many major retailers. If the package is clearly moving during these times this process will be delayed. Military addresses must comply with U. Export Control Laws and Regulations. Therefore, export restrictions are applicable. BRASS JUNKIE LLC offers some items that may be restricted by federal, state or local laws. Please check the laws affecting your potential order before contacting us to be certain you are not violating a statute. Under Federal Law 18 U. 922 (D) (1)-(9) persons with a legal disability are also restricted from purchasing certain products. When purchasing any of our products you accept the full responsibility to follow and comply with all regulations that apply. BRASS JUNKIE LLC is not responsible for customer misuse of any items.