In brief: Based on review measurements: In test: 0.6-6.5mm 400W 220V Mini Die Grinder (310 W vs. 250).
Model GJ-8018LCD 2016 Read review → 0.6-6.5mm 400W 220V Mini Die Grinder Boli · 2015 Read review → Power, W 450 400 In test, W 250 310 Review conclusion With reservations With reservations
Only in one review: Voltage 220 V (0.6-6.5mm 400W 220V Mini Die Grinder); Temperature rise 55 °C (0.6-6.5mm 400W 220V Mini Die Grinder); Weight 982 g (0.6-6.5mm 400W 220V Mini Die Grinder).
GJ-8018LCD: Suitable for heat-shrink and plastic work, but poor for PCB soldering due to no temperature stabilization and weak flow through narrow nozzles.
0.6-6.5mm 400W 220V Mini Die Grinder: It has enough power and is comfortable to use, but it heats up noticeably and needs breaks.
Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.
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