Your product’s model number (which typically looks like M-RBU126, V-UMB46, Y-UV90, R-IG7, etc. ) can usually be found:
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Logitech Customer Support (Excluding Harmony Products) 800-966992 (Cantonese) Monday - Friday: 9:00 - 18:00 (Hong Kong time)
HK Sales & Technical Hotlines by Good Century Holdings Ltd. Sales Hotline: 3619-6500 Technical Support: 3619-6499
HK Sales & Technical Hotlines by Ingram Micro (China) Limited Sales Hotline: 2564-9200 Technical Support: 2564-9138 Monday - Friday: 9:00 - 13:00, 14:00 - 18:00
Ultimate Ears - HK Sales & Technical Hotlines by Thinking Group Ltd. Sales Hotline: 2955-1000 Technical Support: 2955-1333
Harmony Product Support Toll-free phone and email support is available for a limited period after the initial setup of your Harmony. View support options