BT version: BT 5.3 BT receiving distance ≥ 10 meters TF card: maximum support 32GB Speaker size: 102mm Speaker power: 10W Play time: 70% volume ≤ 10h Play time: 100% volume ≤ 7h Frequency range: 50Hz~20kHz Signal-to-noise ratio: ≥90dB Power input: DC5V Battery capacity: 2400mMh Working voltage: 3.7V Charging time: 4.5h Net weight of speaker: 1.1kg Speaker size: 263.6x149.5x230mm Function: wireless playback / USB flash drive playback / TF card playback / AUX audio input