The Green Lion ZINC Y Metal Earbuds TWS with ANC delivers superior sound quality and a trendy, long-lasting design. Made of ABS + aluminum alloy, the earbuds are sturdy yet fashionable and ergonomic in shape. Active Noise Cancellation (ANC) delivers a deep listening experience with reduced ambient noise. Bluetooth V5.4 and 10m transmission ensure stable connectivity for seamless music streaming. Playtime of up to 4 hours, fast Type-C charging (1.5 hours), and an ergonomic design are offered for ease of use during the day. Specification Material: ABS + Aluminum Alloy Case Battery: 320mAh Earbuds Battery: 30mAh Bluetooth: V5.4 Transmission Range: 10m Speaker: 13mm Frequency: 20Hz-20KHz Impedance: 32±15%? Sensitivity: 104±3 dB Charging Port: Type-C Charging Time: 1.5 Hrs Playtime: 4 Hrs Features High-Definition Microphone 4 HRS Playtime ANC TWS Type-C Charging