Check the listing for details. Mares LED Transmitter Tank Module. Condition: New. Listed at 329.95 USD. Mares LED Transmitter Tank Module PRODUCT DESCRIPTION Mares LED Transmitter Tank Module - Transmits tank information - Color LED for quick tank check on the surface - Color LED alerts buddy of low air situation during dive - Permanent pairing - EN250:2014 certified to 300bar - Battery type: CR123A, user replaceable We ship Monday-Friday 8:30AM - 5PM of EST While some orders will not be shipped out same or next day, they will be delivered by the estimated delivery date. If you desire the item sooner, please, choose expedited shipping options. Tracking: Our system will automatically update you with the tracking info once the order is shipped. To ensure the safety of your items, orders that are valued over $100 may require signature confirmation. Please, contact us through messaging if you need more information on the product