CardRadio is the smallest and most simple radioguide receiver, with the best audio quality:
- credit card sized: fits in a shirt pocket
- lightweight: less than 50 grams
- up to 40 hours of battery life with 2 AAA alkaline batteries
- no need for bulky chargers: store hundreds of CardRadios in a cabinet or on a shelf
- up to 93 channels available, for a multitude of tours in the same area at the same time
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