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Make observations in nature worry-free with the rechargeable Swarovski AX Visio Spare Battery. While run time depends on various factors, the battery lasts up to 15 hours during normal operation, up to 2 hours in maximum mode, and charges to 90% in just 3.5 hours for a quick return to your discoveries. Excellent as a spare or replacement, it will keep the AX Visio running for longer.