Bought 2 128GB Sandisk Extreme Pro 170MB/s for my Lumix G9 from Amazon website & sold by Amazon. Performance is the same as the Sandisk Extreme Pro 95MB/s for the same price. Don’t expected any faster. The reason I bought this was to upgrade to a larger card capacity. Would love to have a faster card like the Extreme Pro 300MB/s but it is way too expensive. If you intend to use this card for 4K the Extreme Pro 170MB/s is absolutely good enough. By the way the cards have been verified by Sandisk as 100% genuine or 100% authentic and I didn’t have any issue registered them on Sandisk website. Highly recommended!