Features 1、WIRELESS BLUETOOTH: Portable Bluetooth speaker supports wireless Bluetooth connection, Bluetooth control, 40m Bluetooth transmission range. 2、MULTIPLE PLAYBACK MODES: Bluetooth speaker adopts multiple playback modes, supporting memory card, U disk, Bluetooth, etc. Four speakers and multi function. 3、HIFI SOUND QUALITY: Wireless Bluetooth speaker has HiFi sound quality with cool rhythm lights, so you can enjoy a visual and auditory feast. 4、RADIO FUNCTION: Bass Bluetooth speaker with extended metal antenna, strong reception signal, sensitive radio, listen to many radio stations. 5、LONG STANDBY: Wireless speaker has a built in 12000mAh battery that lasts for 40 hours of playback, supports USB charging, and ultra long standby. 6、TREBLE AND BASS: Retro Bluetooth speaker is designed with treble and bass, HiFi, stable and excellent sound quality transmission, with pure copper connection cable. Specification Item Type: Bluetooth Speaker Material: ABS, Metal Bluetooth Support Protocols: AVCTP1.0, AVRCP1.0, GAVDP 1.2, AVDTP2, AVDTP 1.0, A2DP 1.2, Hands Free Profile 1.5, Headset Profile V1.1 Bluetooth Transmission Range: 40M/43.7yd Transmission Energy: CLASS2 (Maximum 4dB) Frequency Range: 2.4-2.48GHz Speaker Output Power: 30W Built in Li Polymer Battery: 12000mAh Remote Control Battery Specification: 1 x CR2025 150mAh Battery (included) Memory Card: Maximum Support 64G (not Included) Package List 1 x Speaker 1 x Charging Cable 1 x Instruction Manual 1 x Remote Control