RRB

Specification:

• Physical Dimensions (LxWxH): 2.75" x .5" x 1.5"
• Weight: 8.5 grams (without strap)
• Battery: CR2032
• Battery Life: Up to 12 months
• Sweatproof: Yes (hand washable strap)
• Water Rating: IPX7 (waterproof up to 5 ft)
• Strap Length: Adjustable from 24" to 48" (stretched)