ISOtunes CALIBER BT are true-wireless electronic earbuds engineered for shooters and outdoor users who need hearing amplification plus certified hearing protection in a compact package.
The ISOtunes CALIBER BT pack Tactical Sound Control™ circuitry, Bluetooth 5.2 connectivity and an ANSI-certified 25 dB NRR (CSA Class BL) into ultra-durable IP67-rated earbuds. Designed to amplify environmental sound while suppressing dangerous impulse noise in under 2 ms, CALIBER BT delivers up to 13 hours of Bluetooth playback (up to 16 hours using TSC mode) and two full additional charges stored in the included charging case. The set ships with foam and silicone eartips, a USB-C charging cable and a lanyarded charging case, and includes a noise-isolating microphone and SafeMax™ technology to cap output at 90 dB for hearing conservation.
Key Features
Noise Reduction Rating (NRR): 25 dB (ANSI) / CSA Class BL Tactical Sound Control™: Amplifies ambient sound and suppresses impulse noise in under 2 ms Battery Life: Up to 13 hours (Bluetooth) / up to 16 hours (TSC) plus two full charges in the case Connectivity: Bluetooth 5.2 Durability: IP67 dust- and waterproof rating Microphone: Background noise-reducing, noise-isolating mic for clear communication Safety: SafeMax Technology™ limits output to 90 dB Includes: Variety pack of foam & silicone eartips, USB-C cable, charging case with lanyard
All Technical Data
Model / SKU: CALIBER BT / IT-17 Type: True wireless electronic earbuds with hearing protection Noise Reduction: 25 dB NRR (ANSI) / CSA Class BL Battery: Up to 13 hours Bluetooth, up to 16 hours TSC; charging case stores two full charges Bluetooth: Bluetooth 5.2 Response Time: Tactical Sound Control™ triggers suppression in < 2 ms Ingress Protection: IP67 (waterproof & dust-tight) Microphone: Noise-reducing microphone for communication Safety Limit: SafeMax Technology™ limits max output to 90 dB Warranty: 1-Year Limited Warranty
Why Choose This Product?
The ISOtunes CALIBER BT Electronic Earbuds combine certified 25 dB hearing protection with Bluetooth convenience and fast-acting Tactical Sound Control™, making them an ideal option for shooters and outdoor professionals who need situational awareness, music/communication and reliable protection in a compact, rugged package.
Service très rapide merci
(Translated by Google)
Very fast service, thank you.
Jean-Pierre Gagnon
15 Oct 2025
J’ai commandé via le site Internet de Londero Sports une boîte de munitions (calibre 270) que je trouvais pas ailleurs… Livraison super rapide! Je recommande sans hésiter.
(Translated by Google)
I ordered a box of ammunition (270 caliber) through the Londero Sports website, which I couldn't find anywhere else... Super fast delivery! I recommend it without hesitation.
normand gravel
11 Oct 2025
J'avais besoin d'une pièce en mode express et ça très bien été. 2 jours et c'était réglé. Bon service.
(Translated by Google)
I needed a part express and it went very well. 2 days and it was sorted. Good service.
Antony Theroux-laroche
10 Oct 2025
Mustang Qc
01 Oct 2025
Super services et bons prix
(Translated by Google)
Great service and good prices
Yann Le Bihan
26 Sep 2025
Londero was recommended, filled a basket, asked for help in located an item, quick email response, order placed, order shipped that day, and the package ???? made its was from QC to the southern most part of Canada in 2 days.
Ivan Canjar
22 Sep 2025
Excellent service !
Rapide et efficace, good Job
(Translated by Google)
Excellent service!
Fast and efficient, good job
jean-francois lahaie
16 Sep 2025
I have recently made multiple purchases online with Londero Sports and they have been very, very quick on sending the parcels. Very happy with our purchases and service. Will be back for more.
Mona Tomlinson
15 Sep 2025
Provost Mario
15 Sep 2025
Jonathan Laplante
12 Sep 2025
Pierre pour achat d'arbalet ils connaissent leurs affaire super services Merci encore ! Je suis 120% satisfait .
(Translated by Google)
Pierre for the purchase of a crossbow, they know their stuff, great service, thanks again! I am 120% satisfied.
Eric Duc
05 Sep 2025
guerroumi smail
04 Sep 2025
Très content de ma commande! La vitesse de réception était très rapide et appréciée.
(Translated by Google)
Very happy with my order! The speed of receipt was very fast and appreciated.
Léona Gauthier
03 Sep 2025
I’ve never had the pleasure of visiting the store itself, but I have placed numerous online orders. Every order has been handled promptly and often shipped the very same day. Excelled customer service. 10/10 recommend for your outdoor needs.
English 
Service très rapide merci (Translated by Google) Very fast service, thank you.