Antenna silueta 8 months 2 Tower silueta 12 months 3 Cellphone tower silueta 12 months 0 Water silueta about 1 year 6 Heart rate line silueta about 1 year 2 Heartbeat line silueta about 1 year 5 Heartbeat silueta about 1 year 7 Heartbeat silueta about 1 year 2 Heartbeat silueta about 1 year 3 Heartbeat silueta about 1 year 3 Electrocardiogram silueta about 1 year 1 Heart pulse silueta about 1 year 5 Heartbeat silueta about 1 year 3 Blood pressure silueta about 1 year 6 Electrocardiogram silueta about 1 year 8 Stethoscope silueta about 1 year 12 Coffee heartbeat silueta about 1 year 14