【Penoval】A4 Pro(繪圖入門款)
•人工設計筆身
•三段電量顯示
•最細筆尖繪畫更精準
•完美配中更適合書寫繪畫
•傾斜角功能提高書繪品質
• 防手掌誤觸
• 磁力吸附
• 快速充電
• 無需藍芽配對
• 支援iOS功能（隨手寫、圖形辨識...等）
Severity: Notice
Message: Undefined index: uid
Filename: modal/messenger_auth_modal.php
Line Number: 33
Backtrace:
File: /var/www/public/application/views/modal/messenger_auth_modal.php
Line: 33
Function: _error_handler
File: /var/www/public/application/views/inc/footer_view.php
Line: 8
Function: view
File: /var/www/public/application/core/Ext_Controller.php
Line: 131
Function: view
File: /var/www/public/application/controllers/Device.php
Line: 242
Function: loadView
File: /var/www/public/index.php
Line: 315
Function: require_once