PROS: All metal, seems good quality, fairly durable. About twice as expensive as plastic blocks. The battery and device are functional upon receipt, no need to remove the plastic battery cover that others seem to have complained about. The kit includes an extra battery and a screwdriver to replace the battery. who produced this product is simply "Made in China". The "Owner's Manual" looks like it's from a copier on thin paper. Don't lose your original battery until you know which replacement is the right one! Would I buy again, yes, good quality for the price.
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