Garmin HRM 600

The HRM 600 premium heart rate monitor is built for data-driven performance athletes looking for accurate heart rate and HRV data plus running dynamics.

Specifcations:

• Module dimensions (LxWxD): 2.7" W x 1.2" H x 0.4"D (68.0 x 31.6 x 11.0 mm)
• XS-S: Strap length: 22"–28" (56–72 cm)
  Fits chest size 23.5–33.5” (60–85 cm)
• M-XL: Strap length: 28"–42" (72–106 cm)
  Fits chest size 31.5–47”(80–119 cm)
• Weight: 2.2 oz (63 g) With M-XL Strap, 0.65 oz (18 g) Module Only
• Water rating: 5 ATM
• Battery: Rechargeable (Garmin proprietary plug charger)
  
• Battery life: Up to 2 months (using 1 hour per day)
  

Photo Credit: Garmin