Retevis H-777 Walkie Talkie 3W 16CH Single Band with Earpiece Handheld Ham Amateur Radio Transceiver 2 Way Radio Built in Rechargeable 1500mAh Li-ion Battery (2 Pack) Every radio has a earpiece:Could be more robust as one has started to play up when connecting to radio; If you're using these in a business setting with people or customers around 1500mAH battery capacity:You can charge 2-3 hours,then you can use it for 8-9 hours continuous use or longer Built-in Led torch make things easier when in dark environment A low battery alarm warn you to recharge the battery before the power run out Range up to 3 miles (5 km) depending on environment and terrain