ISOtunes Sport Hearing protection plugs Advance

Active earplug with Bluetooth. Attenuation value (SNR): 33 dB. Powered by rechargeable 3.7 V Li-ion battery. Includes: Trilogy Foam earplugs in 4 sizes, a silicone earplug with triple flange, micro USB charging cable and storage box. Weight: 23.5 g.