Delicate and compact speaker with portable size, anti-fingerprint, anti-scratch, anti-sweat Built-in 400mAh high capacity battery with professional energy-saving circuit design 360 omnidirectional sound technology ensures balanced sound diffusion TWS Bluetooth speaker, two speakers can connect to each other, one phone can connect to two speakers, giving you a different experience Bluetooth 5.0 ensures stable transmission. Simple design, click and use Specifications: Size: 45*45*48mm Battery Capacity: 400mAh Working Time: 2-3h Bluetooth Version: 5.0 Chip: Zhongke Lanxun SNR: 70db Frequency response: 60Hz-15KHz Output power: DC5V TWS Function: Turn on the two stereos to enter the power-on state, double-click any one of them to turn on the key After hearing the announcement of the prompt tone, the connection with the other station was successful Compatible with: Bluetooth-enabled devices Package included: 1 x Bluetooth Speaker 1 x English and Chinese User Manual