Colorful Rhythm bone-conduction bt speaker

Specification: Certification: NONE Origin: Mainland China Cabinet Material: Plastic Speaker Type: Portable Communication: bluetooth-compatible Channels: 1 Number of Loudspeaker Enclosure: 1 Audio Crossover: Full-Range Intelligent Personal Assistant: NONE Use: Home Category: Speakers Sound Mode: Standard Mode Touch Screen: NO Maximum wireless range: 50m-60m Input/Output: USB Maximum power: 5.4W Battery capacity: polymer lithium battery 400mAh Bluetooth version: V5.0 Transmission distance: >30m Horn type: 3W strong magnetic resonance horn lamp Bead type: RGB magic color lamp Number of lamp beads: 24 Waterproof grade: not waterproof Charging input: Type-c/5v-0.3A Charging time: 2 hours and 40 minutes Battery life: about 1 hour (polar lamp+Bluetooth audio) About 15 hours (single Bluetooth audio mode) 3 hours (single polar lamp) Standby time: no Bluetooth connection/pickup, automatic shutdown in 5 minutes Product size: 31 * 31 * 26mm/1.2*1.2*1in Package size: 135 * 135 * 50mm/5.3*5.3*2in Net weight of product: 48g Gross weight: 210g Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement.