4V maintains detector performance and features

The speaker is loud enough for quiet fields but struggles in high wind or near traffic

The rubber handle provides a secure grip even in wet conditions

eliminating the corrosion risk and mid-dive dead-battery scenario that AA-powered units introduce

An excellent resource book packed full of down-to-earth information

Detecting Adventure Aqua-Tek Waterproof Headphones - Garrett AT Series crevice cleaning 4V maintains detector performance andWhen you're serious about underwater detecting with your Garrett AT Pro or AT Max, cheap headphones just won't cut it. The Aqua Tek waterproof headphones are built specifically for treasure hunters who need reliable audio performance whether they're working shallow water or diving deep wrecks. Key Features 200+ foot depth rating dive deeper than most recreational limits without worry Oversized speaker elements catch faint targets with deep, rich tone