High-performance Bluetooth V5.4, stable transmission and continuous connection Using innovative Bluetooth V5.4 chip, music calls tend to zero delay, lower power consumption and more power saving, more stable calls, clearer sound Smart touch operation is easy to operate. You can achieve the functions you need with just of the function key Zero and no sense of wear. More comfortable exercise and fitness 360 surround sound cavity, deep and powerful bass and clear details Product type: 2-in-1 small speaker earphones Chip version: V5.4 Playing time: about 4-5 hours Frequency response: 20Hz-20kHz Earphone battery capacity: 40mAh Small speaker battery capacity: 500mAh Charging interface: Type-c Charging time: about 1.5 hours Standby time: about 120 hours Color: Material: ABS Package Contents: 1 x Speaker 2 x Headphones 1 x Charging Cable 1 x Lanyard 1 x Instructions in Chinese and English Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.