When comparing Teknetics D4000 vs Xterra 305, the Slant community recommends Xterra 305 for most people. In the question“What are the best metal detectors for beginners?” Xterra 305 is ranked 1st while Teknetics D4000 is ranked 7th. The most important reason people chose Xterra 305 is:
Xterra 305 is really great at finding silver.
Specs
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Pros
Pro Accurate pinpoint feature
The D4000's pinpoint feature outperforms similar detectors.
Pro Great battery life
The D4000 runs about 25 hours on a 9-v battery.
Pro High silver response
Xterra 305 is really great at finding silver.
Pro Pinpoint feature
Because the pinpoint feature is included, an additional pinpointer won't be needed.
Pro Threshold adjustment
The threshold can be adjusted on a scale of -5 to 25 to change the sensitivity of the device to objects at different depths.
Cons
Con High rate of false positives
This device tends to give a high amount of false readings.
Con No backlight
While the LCD display is useful, it can't be seen in dark environments.