QIYUN Tuning Fork, 528 Hz Tuning Fork with Silicone Hammer and Cleaning Cloth Solfeggio Tuning Fork for DNA Repair Healing and Perfect Healing Musical Instrument

I used a phone app to test the fork, which might not be the most accurate measure but it's better than nothing. I've used it with some digital products and it seems to be fairly accurate. The fork measured at 416Hz so might be a bit lower than 417Hz and I'm not sure how much difference that actually makes, but forks vibrate with overtones so for me and my purposes it's close enough. The fork comes with a microfiber cleaning cloth, velvet-like storage bag and a ball striker. Not sure what the ball is made of but it appears to be silicone or something similar. I don't care for these ball strikers and find I get better, cleaner activation with other things. A hint for those not going to use the ball striker, assuming you don't have sensitivities to silicone/rubber type products is you can take the ball off the striker and put it on the stem of the fork which may help to hold the fork better. This was an under fifteen US dollars fork so for the price I think it's a good buy.

I love this one. I have ordered from others and this by far has the best sound quality

Excellent tool for relaxation.

Works great for Neuro exam, vibration last longer then prior tuning fork

While RE 417.0 hertz rang true, it was the only accurate Solfeggio tone in the set. The Attached movie shows the 635.4 hertz rather than the 639.0 SOL beautifully etched on both the body and left fork. While I would expect the octave below, 317 to measure as it clearly does in the video, 639.0/2 would be 319.5 hertz for cellular healing. Neither will evoke the direct healing response of the Solfeggio SOL on the etheric and the cellular bodies. There will be healing dependent on the intention of the healer and healee. The purity of tone is absent in 5 of the 6 set tuning forks. There is a quality control issue with the manufacturer on this set.While the set would be a thoughtful, lovely gift for an aspiring student, the function of the Solfeggio Sound synchronicity and healing will remain unavailable to most clients. Although I would like to keep this lovely set, it is useless for my very specific needs. I am considering trying to retune the set to true. It would be more simple to return the set so the Manufacturer will address this issue and fewer defective units are pushed onto the market. It is a lovely unit with poor quality control.