The best-selling MQ-24 is back, now made with more environmentally responsible materials. The hour, minute, and seconds hands design features simple index numbers in a lineup of different monochromatic color schemes, all polished to a slim, minimalist look and feel. The band is made with bio-based resin, a material expected to help reduce environmental impact. Details Case Size (L x W x H): 38.8 × 34.9 × 7.8 mm Weight: 20g Case and Bezel Material: Resin Water Resistance: Water Resistant Band: Bio-based Resin Band Power Supply and Battery Life: Approx. battery life: 3 years on SR626SW Glass: Resin Glass Compatible Band Size: 145 to 205 mm Accuracy: Accuracy: ±20 seconds per month