Others | Mini Bluetooth 5.4 Under Pillow Sleep Aid Speaker HiFi Stereo White Noise Multi-Functional Home Sleep Ultra Thin Timed Audio Pla

Function introduction: This sleep speaker supports Bluetooth 5.3 connection, with three types of white noise: waves, streams, and bird songs built-in. It has three levels of timed shutdown: 30/60/90 minutes, uses a 40mm speaker unit, and has an ultra-thin design that can be placed next to the pillow without disturbing others.Button functionsLeft button: Power on/off (press and hold for 3 seconds to turn on and enter Bluetooth mode); Click to enter white noise mode while turned offMiddle button: Click to switch to the next track; Long press to increase volumeRight button: Long press to decrease volume; Click once to schedule (30/60/90min)Performance parameters:Color: BlueMaterial: ABS-PC linen fabric (polyester fiber)Battery capacity: 250mAHSpeaker: 40MMCharging voltage&current: 5V/1ACharging time: 1-2 hours, battery life: about 5 hoursBluetooth version: 5.3Bluetooth pairing name: X3proFrequency response: 20 Hz-20000 HzImpedance: 32 Ω± 15%Distortion rate: ≤ 2% (50 Hz -3 kHz)Sound output method: Acoustic guided outputAcoustic structure: forward sound generation+backward sound cavity design