Casio Illuminator Tide Graph Moon Phase 10-Year Battery Digital Watch WS-1700H-1AV

The Casio WS-1700H series is loaded with helpful features & functions, including:, Moon Phase & Tide Graph, (Up to) 10-Year Battery life w/ included CR2025 Model Battery, 100M / 10 ATM Water Resistance Rating provides safety during light water activities, LED Backlight Illumination, to aid visibility in darker environments/areas