How long is the battery life between charges?

Dear customer, Thank you very much for your question. Retevis RT648 walkie-talkie, the length of use is inextricably linked to the volume level and frequency of use and can reach 8 hours in standby mode. Hope it can help you. If it doesn't help, you may go to the product page, find "Sold by Retevis Direct" under "Add to Cart" on the right side of the product page, click on “Retevis Direct”, then click the button "Ask a question" to reach out to us, we are always here for you. We are a professional walkie-talkies manufacturer, if you have any questions about walkie-talkies, please contact us freely. Best regards, Karen

Will these radios work with some existing Motorola T80 extreme radios we already have?

Dear customer, Thank you very much for your question. The communication between the Walkie talkie must in the same frequency and in the same CTCSS/DCS. You must know the frequency and CTCSS/DCS of each channel, then check if they are the same with our Retevis RT648 Walkie Talkie. RT648 have frequencies and CTCSS/DCS are> Channel 1: 446.00625 CTCSS/DCS: 114.8 Channel 2: 446.01875 CTCSS/DCS: 114.8 Channel 3: 446.03125 CTCSS/DCS: 114.8 Channel 4: 446.04375 CTCSS/DCS: 114.8 Canale 5: 446 05625 CTCSS/DCS: 114.8 Channel 6: 446.06875 CTCSS/DCS: 114.8 Channel 7: 446.08125 CTCSS/DCS: 114.8 Channel 8: 446.09375 CTCSS/DCS: 114.8 Channel 9: 446. 10625 CTCSS/DCS: D026N Canale 10: 446.11875 CTCCS/DCS: D026N Channel 11: 446.13125 CTCSS/DCS: D026N Channel 12: 446.14375 CTCSS/DCS: D026N Channel 13: 446. 15625 CTCSS/DCS: D026N Channel 14: 446. 16875 CTCSS/DCS: D026N Channel 15: 446.18125 CTCSS/DCS: D026N Channel 16: 446. 19375 CTCSS/DCS: D026N For example, if to make communication between the Walkie talkie in the first channel, the frequency and CTCSS/DCS of his other Walkie Talkie must also be 446.00625 CTCSS/DCS: 114.8. Hope it can help you. If it doesn't help, you may go to the product page, find "Sold by Retevis Direct" under "Add to Cart" on the right side of the product page, click on “Retevis Direct”, then click the button "Ask a question" to reach out to us, we are always here for you. We are a professional walkie-talkies manufacturer, if you have any questions about walkie-talkies, please contact us freely. Best regards, Karen

What earpieces fit this radio

Dear customer, Thank you very much for your question. Here is the ASIN of the Retevis RT648 walkie talkies earpieces: B07B62VKVZ or B07X53QN3P. You can search for them on Amazon. Hope it can help you. If it doesn't help, you may go to the product page, find the "Sold by Retevis Direct" under "Add to Cart" on the right side of the product page, click on “Retevis Direct”, then click the button "Ask a question" to reach out to us, we are always here for you. We are a professional walkie-talkies manufacturer, if you have any questions about walkie-talkies, please contact us freely. Best regards, Karen

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