4Xtreme vs Air
| Golden Mask 4Xtreme | Quest Air | |
|---|---|---|
| Technology | VLF | VLF |
| Frequency | 8, 18 kHz | 10 kHz |
| Frequency Type | — | — |
| Frequency Tech | Multi-Select | Single Frequency |
| Weight | 1.4 kg | 0.9 kg |
| Price | $556.4 | — |
| Best For | Relics, Coins | Travel, Casual, Coins |
| Waterproof | Yes | Yes |
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