An ultra-thin module encased in carbon fiber makes for a stylish G-STEEL timepiece with the slimmest profile yet. Strong, yet lightweight, the carbon core guard structure absorbs external shocks and retains Bluetooth connectivity and solar power functionality even with smaller components and a thinner module. Measuring just 12.9mm from the back of the case to the top of the bezel, the GST-B400 is over a millimeter thinner than its predecessor.
An ultra-thin module encased in carbon fiber makes for a stylish G-STEEL timepiece with the slimmest profile yet. Strong, yet lightweight, the carbon core guard structure absorbs external shocks and retains Bluetooth connectivity and solar power functionality even with smaller components and a thinner module. Measuring just 12.9mm from the back of the case to the top of the bezel, the GST-B400 is over a millimeter thinner than its predecessor.
in 8 offers
last seen 11 May 2026
The lowest price we last saw for G-Shock G-Steel Watch GST-B400BD-1A2 was $517.04 at eBay.com.au, compared across 6 retailers (last seen 11 May 2026). Prices may have changed since.
The all-time low we recorded was $308.00 on 3 Mar 2026.
Prices last updated 11 May 2026.
G-Shock G-Steel Watch GST-B400BD-1A2
An ultra-thin module encased in carbon fiber makes for a stylish G-STEEL timepiece with the slimmest profile yet. Strong, yet lightweight, the carbon core guard structure absorbs external shocks and retains Bluetooth connectivity and solar power functionality even with smaller components and a thinner module. Measuring just 12.9mm from the back of the case to the top of the bezel, the GST-B400 is over a millimeter thinner than its predecessor.
An ultra-thin module encased in carbon fiber makes for a stylish G-STEEL timepiece with the slimmest profile yet. Strong, yet lightweight, the carbon core guard structure absorbs external shocks and retains Bluetooth connectivity and solar power functionality even with smaller components and a thinner module. Measuring just 12.9mm from the back of the case to the top of the bezel, the GST-B400 is over a millimeter thinner than its predecessor.
Last updated at 11/05/2026 15:48:35
Casio Gst-b400 Solar G-shock G-steel
Free delivery
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G-Shock GSTB400BD-1A2 G-Steel Limited Edition Watch - Shiels Jewellers
Free delivery
G-Shock GSTB400BD-1A2 G-Steel Limited Edition Watch
Free delivery
G-Shock GSTB400BD-1A2 G-Steel Limited Edition Watch
Free delivery
G-Shock GSTB400BD-1A2 G-Steel Limited Edition Watch - Grahams Jewellers
Free delivery between 14–19 May
Casio G-shock G-Steel GST-B400BD-1A2 Analog-Digital Combination
Delivery $35.13
originally posted on ebay.com
very nice technology
| Batteries | 1 Product Specific batteries required. (included) |
| Product dimensions | 20.5 x 1.3 x 5 cm; 160 Grams |
| Power source | Solar |
| Number of batteries | 1 Product Specific batteries required. (included) |
| Item dimensions L x W x H | 20.5 x 1.3 x 5 centimetres |
Casio Gst-b400 Solar G-shock G-steel
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
G-Shock GSTB400BD-1A2 G-Steel Limited Edition Watch - Shiels Jewellers
Free delivery
G-Shock GSTB400BD-1A2 G-Steel Limited Edition Watch
Free delivery
G-Shock GSTB400BD-1A2 G-Steel Limited Edition Watch
Free delivery
G-Shock GSTB400BD-1A2 G-Steel Limited Edition Watch - Grahams Jewellers
Free delivery between 14–19 May
very nice technology
| Batteries | 1 Product Specific batteries required. (included) |
| Product dimensions | 20.5 x 1.3 x 5 cm; 160 Grams |
| Power source | Solar |
| Number of batteries | 1 Product Specific batteries required. (included) |
| Item dimensions L x W x H | 20.5 x 1.3 x 5 centimetres |
