Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches Battery life: 10-12 months on all watches