Nathan Pulsar Strobe (2 pack) 
Features & Benefits
Our lightest and most versatile LED component in the Run Longer Series is an ideal solution for runners, walkers, cyclists, and kids. Clips anywhere and provides a high level of visibility with minimal weight or interference on the body.
LED’s: 2 LED’s – 6 max lumens
Battery: 2 x 3V Lithium 2032 – replaceable coin style battery
Burn time: Fast strobe = 4 hours, Slow strobe = 10 hours, Alternating = 30+ hours
Water resistance: IPX4 weather resistant