3M Pro-Grade 30 dB Steel Earmuffs Mulit-Colored 1 pair 3M Pro-Grade Earmuff offers superior comfort and protection. The 3M Pro-Grade Earmuff is designed to be a high noise reducing/protection earmuff. Adjustable, vented headband design reduces heat build and improves comfort when worn with hats. Part of the 3M pro series safety products line that was designed for the way pros think, the way they shop and the way they work. Flexible headband adjusts to multiple head sizes 30 dB noise reduction rating (NRR) Helps lower your risk of noise-induced hearing loss Helps protect against harmful noises that are at 85 dB and above Premium cushioning and pivoting cups to help ensure a good fit Specifications Brand Name: 3M Sub Brand: Pro-Grade Product Type: Earmuffs Color: Mulit-Colored Disposable or Reusable: Reusable Material: Steel Noise Reduction Rating: 30 decibel Number in Package: 1 pair Packaging Type: Boxed Sub Brand: Pro Grade
| Brands | |
|---|---|
| Color | |
| Special Filters |
| Power Input | 100 – 240V ̴ 50/60 Hz |
| Signal-to-Noise Ratio | > 80dB |
| Output power (W) | 100W RMS (IEC60268) |
| Dynamic frequency response range (Hz) | 40Hz – 20kHz (-6dB) |
| Frequency Response | 40Hz – 20kHz (-6dB) |
| Transducer | 1 x 5.25 inch (135mm) woofers, 2 x 1 inch (25mm) Dome tweeters |
| Dimensions (Width x Height x Depth) (cm) | 32.0 x 33.9 x 26.3 |
| Dimensions (Width x Height x Depth) (in) | 12.58 x 13.33 x 10.35 |
| Weight (kgs) | 6.4 |
| Weight (lbs) | 14.11 |
| Aux-In | 370 mV RMS (3.5mm connector) |
| Mic-In | 20 mV RMS |
| Guitar-In | 100 mV RMS |
| Bluetooth Input (dBFS) | -9 |
| USB Input (dBFS) | -9 |
| USB Format | FAT16, FAT32 |
| Bluetooth Profile | A2DP V1.4, AVRCP V1.6(SW), TMAP1.0, PBP1.0 |
| Bluetooth Transmitter Frequency Range (GHz) | 2.402GHZ~2.480 |
| Bluetooth Transmitter Modulation | GFSK, π/4 DQPSK, 8DPSK ,BLE1M, BLE2M |
| Bluetooth Transmitter Power | ≤ 16 dBm (EIRP) |
| Bluetooth version | 5.4 |
| Charging time (hours from empty) | < 3.5 |
| Cabel Type | AC power cable (type varies by regions) |
| Cable Length (ft) | 6.6 |
| Cable Length (m) | 2 |
| Battery Type | JBL Battery 200, Li-ion Battery(7.4V/4722mah) |
| Battery Charge Time (hours) | 3.5 |
| Maximum music playing time (hrs) | 15 |
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