NFSTRIKE EARMOR M20 Electronic Ear Protection Earplug Set

Features:.Features: Noise reduction NRR22; intuitive one-button operation; rechargeable, high endurance; two-stage sound mode (indoor and outdoor); power on, power off, low battery prompt; automatic power off when charging, automatic two hours without operation Shut down; high portability, high comfort, high compatibility; comes with a silicone anti-lost rope; three sizes of ear buckles and earplug accessories; comes with a data cable for charging; IPX-4 waterproof rating. .Auto Power-off: The headset will be on standby for nearly 2 hours without operation, and the headset will automatically turn off after 2 hours of inactivity, and will emit 3 beeps. When the headset is turned on, it will automatically turn off when it is put into the charging box. If you need to restart, just press the ON/OFF button again to restart. .Variable Noise Reduction Level: In order to reduce the echo and reverberation when shooting in indoor and outdoor environments, the headset has developed two noise reduction levels, indoor and outdoor modes. .Dynamic Clear Voice Tracking: Dynamic clear voice optimization technology can recognize and optimize voices under noisy environments, and improve voice clarity while reducing the frequency of noise. .Technical Data and Specifications: Speaker/size diameter: 6.1mm; impedance: 16 ohms; rated power: 3nW; frequency response characteristics: full frequency band. Pickup microphone/sensitivity: -38dB; main limit decibel: 82dB; noise reduction decibel: 22dB; power supply: lithium battery 40mH; working voltage: 3.7V; type: omnidirectional.Specifications:.Color: Black .Material: ABS .Product Weight: 100g .Package Dimensions: 10 x 8 x 6cm .Package Weight: 200g .Packing: Graphic CartonPackage Content:.2 x Earplugs .1 x Portable Charging Box .1 x Silicone Anti-lost Cord .1 x USB Cable .1 x Manual