Bluetooth Connection. Battery 30 mAh/ charging station 250 mAh. Earphones made of natural stone extracts in combination with resistant ABS. With bluetooth® 5.3 Connection and integrated lithium battery, 30 mah in each earpiece. Ergonomically designed, with touch control button on the earpiece and hands-free function. 250 mah capacity base and LED charge status indicator, with type C charging cable included. Presented in an individual kraft design box, with instruction manual in english and Spanish.Made From natural stone extracts, helping to reduce the use of plastics, as well as providing a smooth and resistant finish.The Capacities shown in all our external auxiliary batteries are real, all of them incorporating non-recycled, grade A batteries, with a service life of at least 500 charging cycles, and complying with CE regulations. In addition, they are manufactured according rohs standards, and in compliance with the following safety requirements: power bank overcharge protection system. Complete discharge protection system, which increases the durability of the power bank. Blocking system to prevent short circuits. Constant charging transfer system, in accordance with the capacity of the target device.