Description:Name: Bone Conduction Sleeping SpeakerColor: Gray BlueBluetooth-compatible: 5.3Operating voltage: 3.7V-4.2VBuilt-in battery: 400mahTransmission distance: 10MUsage time: 15hStandby time: 150 daysProduct size: 100x28x13mmPacking list:Sleep speaker x 1charging cable x 1Note:There may be color difference due to different computers or smartphones, please forgive me! <div class="panel panel-info"><div class="panel-heading" style="font-weight:bold;">IMPORT: THIS ITEM IS SHIPPED FROM CHINA. PLEASE EXPECT UP TO 25 DAYS FOR DELIVERY</div></div>

Sleep Speaker Machine Portable Sound Machine Rechargeable Timer Bone Conduction Pillow Speaker Royal Blue