ISOtunes Sport CALIBER Electronic Earbuds

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The Freedom You Want. The Protection You Need.

CALIBER is a Bluetooth shooting earbud that packs a big punch in a little package. This electronic ear pro is completely dust, sweat, and waterproof and can run up to 13 hours without needing to be recharged. The completely cordless design allows you to move freely while Tactical Sound Control™ delivers amplified natural sound and gunshot noise reduction.

Tactical Sound Control
TSC™ level-dependent technology allows safe sounds to actively pass through the product while blocking harmful gunshot noise. TSC™ protects hunters and shooters while giving them the ability to communicate, hear range commands, and listen for game.

25 dB of Noise Reduction
Most gunshots will register between 150 - 170 decibels. At those levels hearing damage can occur quickly. Combat those dangerous noise levels and shoot safely all day long.

IP67 Durability
Tough on gear? Now you don't need to worry. CALIBER is completely waterproof and dust-tight. Plus all ISOtunes Sport products are backed by a 1-year warranty.


  • Tactical Sound Control™ Technology enhances your hearing by 8x while protecting you from high-impact noises in under 2 milliseconds.
  • True Wireless Design
  • 25 NRR tested and approved to ANSI s3. 19-1974.
  • IP67 Durability for dust, sweat, and waterproof protection.
  • Up to 13 hour battery life with 2 full additional charges stored in the rechargeable case.
  • Automatic Power Off after 2 hours without Bluetooth connection for battery conservation.
  • Bluetooth 5.2 connects, and dual-connects, devices 30+ feet.
  • SafeMax™ Technology limits volume output to 85 dB for all-day, damage-free listening.
  • Background Noise-Reducing Microphone for clear communication in loud environments.


Small but Mighty
Keep them in your back pocket and charge them on the go, CALIBER goes where you go. These tiny earbuds are proven to block 25 dB of noise, withstand full water submersion, and last you all day.

Ear Protection that Doesn't Look or Feel like Ear Protection
Earbuds when you want it, hearing aids when you need it, and a hearing protector when you least expect it.

What's Included?

  • Three pairs of ISOtunes TRILOGY Short Eartips (S, M, L)
  • Three pairs of ISOtunes TRILOGY Tall Eartips (S,M,L)
  • 1 pair of silicone eartips
  • Charging case
  • Charging case lanyard
  • USB-C charging cord


Extra Information

ISOtunes Sport