LED alarm clock

LEBluetooth version: Bluetooth5.0

Battery type: polymer lithium battery
Support protocol: A2DP, AVRCP, HFP, HSP
Battery capacity: 3.7v 2000mAh, 7.4wH
Connection distance: about 10 meters (without barriers)
Charging interface: MicroUSB, DC5V = 2A
Audio interface: 3.5mm audio
Music time: 32h
Card port: Micro SD/TF card (maximum support 32G)
Standby time: 98h (three levels of screen brightness)
Support call: yes