Will this fit a G-7710 model?

I copied and pasted the details of the CASIO replacement watch band. ABOUT THIS ITEM Genuine Casio Replacement Band Band Width: 22mm - -29mm Color: Black Material: Resin/Rubber DESCRIPTION This Casio Watch Band is authentic. It's crafted with care. This Casio strap CASIO Part Number: 10347688 is compatible with the following watch. ASSOCIATED MODEL(S) CASIO G8900-1 Time Piece Division: Watch 2011 CASIO GA100-1A1 Time Piece Division: Watch 2010 CASIO GA100-1A2 Time Piece Division: Watch 2010 CASIO GA100-1A4 Time Piece Division: Watch 2010 CASIO GA100C-1A3 Time Piece Division: Watch 2013 CASIO GA100C-1A4 Time Piece Division: Watch 2013 CASIO GA100MB-1A Time Piece Division: Watch 2015 CASIO GA110-1A Time Piece Division: Watch 2011 CASIO GA110-1B Time Piece Division: Watch 2011 CASIO GA110MB-1A Time Piece Division: Watch 2015 CASIO GA120-1A Time Piece Division: Watch 2011 CASIO GA120BB-1A Time Piece Division: Watch 2012 CASIO GA300-1A Time Piece Division: Watch 2013 CASIO GAC100-1A Time Piece Division: Watch 2012 CASIO GAC100-1A2 Time Piece Division: Watch 2012 CASIO GD100-1A Time Piece Division: Watch 2010 CASIO GD100-1B Time Piece Division: Watch 2010 CASIO GD120MB-1 Time Piece Division: Watch 2015 CASIO GDF100-1A Time Piece Division: Watch 2011 CASIO GDF100-1B Time Piece Division: Watch 2011 CASIO GDF100BB-1 Time Piece Division: Watch 2012 CASIO GR8900-1 Time Piece Division: Watch 2011 CASIO GR8900A-1 Time Piece Division: Watch 2011 CASIO GW8900-1 Time Piece Division: Watch 2011 CASIO GW8900A-1 Time Piece Division: Watch 2011

will it fit G8900A-1 ?

Yep! It fits this 8900A like a glove. Plus it's much easier to snap on unlike the alternatives.

Does this come with new spring bars to connect the band to the watch face?

No it do not, you must to order it in a separate way

Will this fit a gx-56?

I have the same watch. I am on the fence because it appears there may be a gap of the lower interfacing band to the watch body. Thank you for your answer.