Limited Time Sale! Until February 8th (Sunday) Battery for RELAY G10 wireless system, 600mAh, 3.7V. This is a genuine, perfectly sized replacement battery that is rarely sold. (The battery removed from the device is on top in the second photo, and the battery for sale is on the bottom.) I have personally replaced one and confirmed it works without issue. Due to MOQ (Minimum Order Quantity) requirements, I ended up with more stock than needed, so I am selling the surplus. 【Product Condition】 ・New / Unused ・Operation not confirmed (as the product is unused) ・Stored in a dark, room-temperature environment 【Notes】 ・As this is a personal sale, there is no manufacturer's warranty. ・If there is an initial defect, please contact me before leaving a review. ・Please be sure to check the model number and specifications before purchasing. ・Sales will end when stock runs out. ・Only the battery is for sale (as shown in the fourth photo). ・You can find instructions on how to replace the battery by searching online, but I can offer some advice after purchase. Please feel free to ask any questions in the comments. 〇 Details - Model: Battery for RELAY G10 - Battery Capacity: 600mAh - Battery Voltage: 3.7V - Battery Color: Green Thank you.