Alkaline Case for the Spirit VXA-710 transceiver. A must have accessory just in case one forgets to recharge the transceiver before a long cross country.
Product works well to receive, but does not have enough power to transmit.
Yes, the 710 and 720 can use the FBA-23 AA battery case.
Yes, Per the manufacturer: Yaesu & Vertex radios such as VX-5R, VX-5Rs, VX-6R, VX-7R, VX-7Rb, VXA-700, VXA-710.