Air vs CS4PI
| Quest Air | C.Scope CS4PI | |
|---|---|---|
| Technology | VLF | PI |
| Frequency | 10 kHz | N/A |
| Frequency Type | — | — |
| Frequency Tech | Single Frequency | Pulse Induction |
| Weight | 0.9 kg | 1.5 kg |
| Price | — | $450 |
| Best For | Travel, Casual, Coins | Salt Water Beach |
| Waterproof | Yes | Yes |
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