DPReview posted their review of the Fujifilm Instax SQ1 which you can read in full here. Below are the bullet points:
Like
- Easy-to-operate
- Accurate exposures outdoors
- Comfortable to hold and operate
- Stylish look
- Square format film
Don’t Like
- Placement of shutter button
- CR2 batteries can be difficult to find
- No creative modes like double exposure or lighten/darken
You can also get the SQ6, which has a few more features like double exposures, landscape mode, lighten and darken modes, and a self-timer. Plus some of the color combinations are discounted.
Instax SQ1: Amazon / B&H Photo
Instax SQ6: B&H Photo / Amazon / Adorama
Fujifilm Instax Square: B&H Photo / Amazon / Adorama
Square Black Instant Film: B&H Photo / Amazon / Adorama
Instax Square White Marble Film: B&H Photo / Amazon